36 Publications

Mark all

[36]
2024 | Conference Paper | LibreCat-ID: 56834 | OA
Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens
O. Friesen, L. Claes, C. Scheidemann, N. Feldmann, T. Hemsel, B. Henning, in: 2023 International Congress on Ultrasonics, Beijing, China, IOP Publishing, 2024, p. 012125.
LibreCat | DOI | Download (ext.)
 
[35]
2023 | Journal Article | LibreCat-ID: 45445 | OA
Inverse procedure for measuring piezoelectric material parameters using a single multi-electrode sample
L. Claes, N. Feldmann, V. Schulze, L. Meihost, H. Kuhlmann, B. Jurgelucks, A. Walther, B. Henning, Journal of Sensors and Sensor Systems 12 (2023) 163–173.
LibreCat | DOI | Download (ext.)
 
[34]
2022 | Conference Paper | LibreCat-ID: 6553
Identification of piezoelectric material parameters using optimised multi-electrode specimens
L. Claes, N. Feldmann, V. Schulze, B. Jurgelucks, A. Walther, B. Henning, in: Fortschritte Der Akustik - DAGA 2022, 2022, pp. 1326–1329.
LibreCat | Files available
 
[33]
2022 | Journal Article | LibreCat-ID: 6579 | OA
An explicit symplectic approach to solving the wave equation in moving media
V. Inguva, N. Feldmann, L. Claes, T. Koturbash, T. Hahn-Jose, V. Koutcherov, E. Kenig, Engineering Reports (2022).
LibreCat | DOI | Download (ext.)
 
[32]
2022 | Misc | LibreCat-ID: 6558
Estimation of piezoelectric material parameters of ring-shaped specimens
O. Friesen, L. Claes, N. Feldmann, B. Henning, Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens, International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), 2022.
LibreCat
 
[31]
2022 | Journal Article | LibreCat-ID: 30863
Lamb wave based approach to the determination of acoustic material parameters
S. Johannesmann, L. Claes, N. Feldmann, H. Zeipert, B. Henning, Tm - Technisches Messen 89 (2022) 493–506.
LibreCat | DOI
 
[30]
2021 | Journal Article | LibreCat-ID: 21082 LibreCat | DOI
 
[29]
2021 | Misc | LibreCat-ID: 21564
On the forward simulation and cost functions for the ultrasonic material characterization of polymers
D. Itner, H. Gravenkamp, D. Dreiling, N. Feldmann, B. Henning, On the Forward Simulation and Cost Functions for the Ultrasonic Material Characterization of Polymers , GAMM Annual Meeting, Kassel, 2021.
LibreCat
 
[28]
2021 | Conference Paper | LibreCat-ID: 25265
Application and modelling of ultrasonic transducers using 1-3 piezoelectric composites with structured electrodes
D. Dreiling, D. Itner, N. Feldmann, C. Scheidemann, H. Gravenkamp, B. Henning, in: Fortschritte Der Akustik - DAGA 2021, Deutsche Gesellschaft für Akustik e.V. (DEGA), Wien, 2021.
LibreCat | Files available
 
[27]
2021 | Misc | LibreCat-ID: 21233
Optimal experiment design with respect to electrode configurations for a piezoelectric problem
V. Schulze, S. Schmidt, B. Jurgelucks, N. Feldmann, L. Claes, Optimal Experiment Design with Respect to Electrode Configurations for a Piezoelectric Problem, GAMM Annual Meeting, Kassel, 2021.
LibreCat
 
[26]
2021 | Journal Article | LibreCat-ID: 21341
Modelling damping in piezoceramics: A comparative study
N. Feldmann, V. Schulze, L. Claes, B. Jurgelucks, L. Meihost, A. Walther, B. Henning, Tm - Technisches Messen 88 (2021) 294–302.
LibreCat | DOI
 
[25]
2021 | Conference Paper | LibreCat-ID: 22012
Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation
L. Claes, N. Feldmann, B. Jurgelucks, V. Schulze, S. Schmidt, A. Walther, B. Henning, in: 2021, pp. 237–238.
LibreCat | DOI
 
[24]
2021 | Misc | LibreCat-ID: 23462
Piezoelectric BC Modeling for Electrode Shapes with OED
V. Schulze, S. Schmidt, B. Jurgelucks, N. Feldmann, L. Claes, Piezoelectric BC Modeling for Electrode Shapes with OED, GAMM Juniors’ Summer School 2021, Graz, 2021.
LibreCat
 
[23]
2021 | Dissertation | LibreCat-ID: 6563 | OA
Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers
N. Feldmann,   Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers, Universität Paderborn, 2021.
LibreCat | DOI | Download (ext.)
 
[22]
2021 | Conference Paper | LibreCat-ID: 40541 | OA
Simulation of Guided Waves in Cylinders Subject to Arbitrary Boundary Conditions Using the Scaled Boundary Finite Element Method
D. Itner, H. Gravenkamp, D. Dreiling, N. Feldmann, B. Henning, in: 14th WCCM-ECCOMAS Congress, CIMNE, 2021.
LibreCat | DOI | Download (ext.)
 
[21]
2021 | Journal Article | LibreCat-ID: 21232
Efficient semi-analytical simulation of elastic guided waves in cylinders subject to arbitrary non-symmetric loads
D. Itner, H. Gravenkamp, D. Dreiling, N. Feldmann, B. Henning, Ultrasonics (2021).
LibreCat | DOI
 
[20]
2020 | Conference Paper | LibreCat-ID: 17089 | OA
Increasing the sensitivity in the determination of material parameters by using arbitrary loads in ultrasonic transmission measurements
D. Dreiling, D.T. Itner, N. Feldmann, H. Gravenkamp, B. Henning, in: AMA Service GmbH, 2020.
LibreCat | DOI | Download (ext.)
 
[19]
2020 | Conference Paper | LibreCat-ID: 15163
Solving piezoelectric inverse problems using Algorithmic Differentiation
N. Feldmann, V. Schulze, B. Jurgelucks, B. Henning, in: Fortschritte Der Akustik - DAGA 2020, 2020, pp. 1125–1128.
LibreCat
 
[18]
2020 | Journal Article | LibreCat-ID: 19313
Inverse piezoelectric material parameter characterization using a single disc-shaped specimen
N. Feldmann, V. Schulze, L. Claes, B. Jurgelucks, A. Walther, B. Henning, Tm - Technisches Messen (2020) 50–55.
LibreCat | DOI
 
[17]
2019 | Conference Paper | LibreCat-ID: 15164
A sensitivity-based optimisation procedure for the characterisation of piezoelectric discs
N. Feldmann, B. Jurgelucks, L. Claes, B. Henning, in: 2019 International Congress on Ultrasonics, 2019.
LibreCat | DOI
 
[16]
2019 | Journal Article | LibreCat-ID: 13143
Acoustic absorption measurement for the determination of the volume viscosity of pure fluids / Messverfahren für die akustischen Absorption zur Bestimmung der Volumenviskosität reiner Fluide
L. Claes, L.M. Hülskämper, E. Baumhögger, N. Feldmann, R.S. Chatwell, J. Vrabec, B. Henning, Tm - Technisches Messen (2019) 2–6.
LibreCat | DOI
 
[15]
2019 | Conference Paper | LibreCat-ID: 12952 | OA
A DC bias approach to the characterisation of non-linear material parameters of piezoelectric ceramics
D. Dreiling, N. Feldmann, B. Henning, in: AMA Service GmbH, 2019.
LibreCat | DOI | Download (ext.)
 
[14]
2019 | Misc | LibreCat-ID: 8482
Arbitrary sensitivity for inverse problems in piezoelectricity
B. Jurgelucks, V. Schulze, N. Feldmann, L. Claes, Arbitrary Sensitivity for Inverse Problems in Piezoelectricity, GAMM Annual Meeting, Wien, 2019.
LibreCat
 
[13]
2018 | Journal Article | LibreCat-ID: 6562
An inverse approach to the characterisation of material parameters of piezoelectric discs with triple-ring-electrodes
N. Feldmann, B. Jurgelucks, L. Claes, V. Schulze, B. Henning, A. Walther, Tm - Technisches Messen 86 (2018) 59–65.
LibreCat | DOI
 
[12]
2018 | Conference Paper | LibreCat-ID: 6584
Efficient optimisation of initial values for characterising piezoelectric material parameters
N. Feldmann, B. Henning, in: Fortschritte Der Akustik, München, 2018, pp. 1275–1278.
LibreCat
 
[11]
2018 | Conference Paper | LibreCat-ID: 6586
Extraction of Interpretable Features from Temporal Measurements using Approximate Prototypes
C. Thiel, N. Feldmann, B. Henning, in: Sensoren Und Messsysteme 2018, VDE Verlag GmbH, 2018, pp. 536–539.
LibreCat
 
[10]
2018 | Misc | LibreCat-ID: 6593
Materialparameter von bleihaltigen und bleifreien Piezokeramiken und ihre Bedeutung in der Anwendung
L. Claes, N. Feldmann, B. Henning, Materialparameter von Bleihaltigen Und Bleifreien Piezokeramiken Und Ihre Bedeutung in Der Anwendung, PI Ceramic Akademie, Lederhose, 2018.
LibreCat
 
[9]
2018 | Misc | LibreCat-ID: 6595
Vollständige Charakterisierung von piezoelektrischen Scheiben mit Ringelektroden
N. Feldmann, B. Jurgelucks, L. Claes, B. Henning, Vollständige Charakterisierung von Piezoelektrischen Scheiben Mit Ringelektroden, Workshop “Messtechnische Anwendungen von Ultraschall”, Drübeck, 2018.
LibreCat
 
[8]
2017 | Conference Paper | LibreCat-ID: 6572
Material parameter determination of a piezoelectric disc with triple-ring-electrodes for increased sensitivity
B. Jurgelucks, N. Feldmann, L. Claes, B. Henning, A. Walther, in: Proceedings of Meetings on Acoustics, Honolulu, 2017, p. 030010.
LibreCat | DOI
 
[7]
2017 | Conference Paper | LibreCat-ID: 6583
Determining fractional Zener model parameters from low frequency DMA measurements
N. Feldmann, F. Bause, B. Henning, in: Proceedings – AMA Conferences 2017, Nürnberg, 2017.
LibreCat | DOI
 
[6]
2017 | Misc | LibreCat-ID: 6591
Spektrale Verfahren zur Bestimmung der akustischen Absorption in fluiden Medien
L. Claes, N. Feldmann, B. Henning, Spektrale Verfahren Zur Bestimmung Der Akustischen Absorption in Fluiden Medien, Workshop “Schallfeldbasierte Messverfahren”, Drübeck, 2017.
LibreCat
 
[5]
2016 | Journal Article | LibreCat-ID: 6551
Ultrasonic transmission measurements in the characterization of viscoelasticity utilizing polymeric waveguides
F. Bause, J. Rautenberg, N. Feldmann, M. Webersen, L. Claes, H. Gravenkamp, B. Henning, Measurement Science and Technology 27 (2016).
LibreCat | DOI
 
[4]
2016 | Conference Paper | LibreCat-ID: 6580 LibreCat | DOI
 
[3]
2016 | Journal Article | LibreCat-ID: 6582 LibreCat | DOI
 
[2]
2016 | Misc | LibreCat-ID: 15176
GUM-konforme Unsicherheitsabschätzung bei inversen Problemen am Beispiel akustischer Transmissionsmessungen
N. Feldmann, F. Bause, B. Henning, GUM-konforme Unsicherheitsabschätzung bei inversen Problemen am Beispiel akustischer Transmissionsmessungen, 2016.
LibreCat
 
[1]
2014 | Misc | LibreCat-ID: 6550
Methoden zur Zeit-Frequenz-Analyse bei der Untersuchung dispersionsbehafteter Signale
F. Bause, J. Rautenberg, N. Feldmann, L. Claes, B. Henning, Methoden zur Zeit-Frequenz-Analyse bei der Untersuchung dispersionsbehafteter Signale, DEGA-Symposium, Bad Honnef, 2014.
LibreCat
 

Search

Filter Publications

Display / Sort

Export / Embed

36 Publications

Mark all

[36]
2024 | Conference Paper | LibreCat-ID: 56834 | OA
Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens
O. Friesen, L. Claes, C. Scheidemann, N. Feldmann, T. Hemsel, B. Henning, in: 2023 International Congress on Ultrasonics, Beijing, China, IOP Publishing, 2024, p. 012125.
LibreCat | DOI | Download (ext.)
 
[35]
2023 | Journal Article | LibreCat-ID: 45445 | OA
Inverse procedure for measuring piezoelectric material parameters using a single multi-electrode sample
L. Claes, N. Feldmann, V. Schulze, L. Meihost, H. Kuhlmann, B. Jurgelucks, A. Walther, B. Henning, Journal of Sensors and Sensor Systems 12 (2023) 163–173.
LibreCat | DOI | Download (ext.)
 
[34]
2022 | Conference Paper | LibreCat-ID: 6553
Identification of piezoelectric material parameters using optimised multi-electrode specimens
L. Claes, N. Feldmann, V. Schulze, B. Jurgelucks, A. Walther, B. Henning, in: Fortschritte Der Akustik - DAGA 2022, 2022, pp. 1326–1329.
LibreCat | Files available
 
[33]
2022 | Journal Article | LibreCat-ID: 6579 | OA
An explicit symplectic approach to solving the wave equation in moving media
V. Inguva, N. Feldmann, L. Claes, T. Koturbash, T. Hahn-Jose, V. Koutcherov, E. Kenig, Engineering Reports (2022).
LibreCat | DOI | Download (ext.)
 
[32]
2022 | Misc | LibreCat-ID: 6558
Estimation of piezoelectric material parameters of ring-shaped specimens
O. Friesen, L. Claes, N. Feldmann, B. Henning, Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens, International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), 2022.
LibreCat
 
[31]
2022 | Journal Article | LibreCat-ID: 30863
Lamb wave based approach to the determination of acoustic material parameters
S. Johannesmann, L. Claes, N. Feldmann, H. Zeipert, B. Henning, Tm - Technisches Messen 89 (2022) 493–506.
LibreCat | DOI
 
[30]
2021 | Journal Article | LibreCat-ID: 21082 LibreCat | DOI
 
[29]
2021 | Misc | LibreCat-ID: 21564
On the forward simulation and cost functions for the ultrasonic material characterization of polymers
D. Itner, H. Gravenkamp, D. Dreiling, N. Feldmann, B. Henning, On the Forward Simulation and Cost Functions for the Ultrasonic Material Characterization of Polymers , GAMM Annual Meeting, Kassel, 2021.
LibreCat
 
[28]
2021 | Conference Paper | LibreCat-ID: 25265
Application and modelling of ultrasonic transducers using 1-3 piezoelectric composites with structured electrodes
D. Dreiling, D. Itner, N. Feldmann, C. Scheidemann, H. Gravenkamp, B. Henning, in: Fortschritte Der Akustik - DAGA 2021, Deutsche Gesellschaft für Akustik e.V. (DEGA), Wien, 2021.
LibreCat | Files available
 
[27]
2021 | Misc | LibreCat-ID: 21233
Optimal experiment design with respect to electrode configurations for a piezoelectric problem
V. Schulze, S. Schmidt, B. Jurgelucks, N. Feldmann, L. Claes, Optimal Experiment Design with Respect to Electrode Configurations for a Piezoelectric Problem, GAMM Annual Meeting, Kassel, 2021.
LibreCat
 
[26]
2021 | Journal Article | LibreCat-ID: 21341
Modelling damping in piezoceramics: A comparative study
N. Feldmann, V. Schulze, L. Claes, B. Jurgelucks, L. Meihost, A. Walther, B. Henning, Tm - Technisches Messen 88 (2021) 294–302.
LibreCat | DOI
 
[25]
2021 | Conference Paper | LibreCat-ID: 22012
Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation
L. Claes, N. Feldmann, B. Jurgelucks, V. Schulze, S. Schmidt, A. Walther, B. Henning, in: 2021, pp. 237–238.
LibreCat | DOI
 
[24]
2021 | Misc | LibreCat-ID: 23462
Piezoelectric BC Modeling for Electrode Shapes with OED
V. Schulze, S. Schmidt, B. Jurgelucks, N. Feldmann, L. Claes, Piezoelectric BC Modeling for Electrode Shapes with OED, GAMM Juniors’ Summer School 2021, Graz, 2021.
LibreCat
 
[23]
2021 | Dissertation | LibreCat-ID: 6563 | OA
Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers
N. Feldmann,   Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers, Universität Paderborn, 2021.
LibreCat | DOI | Download (ext.)
 
[22]
2021 | Conference Paper | LibreCat-ID: 40541 | OA
Simulation of Guided Waves in Cylinders Subject to Arbitrary Boundary Conditions Using the Scaled Boundary Finite Element Method
D. Itner, H. Gravenkamp, D. Dreiling, N. Feldmann, B. Henning, in: 14th WCCM-ECCOMAS Congress, CIMNE, 2021.
LibreCat | DOI | Download (ext.)
 
[21]
2021 | Journal Article | LibreCat-ID: 21232
Efficient semi-analytical simulation of elastic guided waves in cylinders subject to arbitrary non-symmetric loads
D. Itner, H. Gravenkamp, D. Dreiling, N. Feldmann, B. Henning, Ultrasonics (2021).
LibreCat | DOI
 
[20]
2020 | Conference Paper | LibreCat-ID: 17089 | OA
Increasing the sensitivity in the determination of material parameters by using arbitrary loads in ultrasonic transmission measurements
D. Dreiling, D.T. Itner, N. Feldmann, H. Gravenkamp, B. Henning, in: AMA Service GmbH, 2020.
LibreCat | DOI | Download (ext.)
 
[19]
2020 | Conference Paper | LibreCat-ID: 15163
Solving piezoelectric inverse problems using Algorithmic Differentiation
N. Feldmann, V. Schulze, B. Jurgelucks, B. Henning, in: Fortschritte Der Akustik - DAGA 2020, 2020, pp. 1125–1128.
LibreCat
 
[18]
2020 | Journal Article | LibreCat-ID: 19313
Inverse piezoelectric material parameter characterization using a single disc-shaped specimen
N. Feldmann, V. Schulze, L. Claes, B. Jurgelucks, A. Walther, B. Henning, Tm - Technisches Messen (2020) 50–55.
LibreCat | DOI
 
[17]
2019 | Conference Paper | LibreCat-ID: 15164
A sensitivity-based optimisation procedure for the characterisation of piezoelectric discs
N. Feldmann, B. Jurgelucks, L. Claes, B. Henning, in: 2019 International Congress on Ultrasonics, 2019.
LibreCat | DOI
 
[16]
2019 | Journal Article | LibreCat-ID: 13143
Acoustic absorption measurement for the determination of the volume viscosity of pure fluids / Messverfahren für die akustischen Absorption zur Bestimmung der Volumenviskosität reiner Fluide
L. Claes, L.M. Hülskämper, E. Baumhögger, N. Feldmann, R.S. Chatwell, J. Vrabec, B. Henning, Tm - Technisches Messen (2019) 2–6.
LibreCat | DOI
 
[15]
2019 | Conference Paper | LibreCat-ID: 12952 | OA
A DC bias approach to the characterisation of non-linear material parameters of piezoelectric ceramics
D. Dreiling, N. Feldmann, B. Henning, in: AMA Service GmbH, 2019.
LibreCat | DOI | Download (ext.)
 
[14]
2019 | Misc | LibreCat-ID: 8482
Arbitrary sensitivity for inverse problems in piezoelectricity
B. Jurgelucks, V. Schulze, N. Feldmann, L. Claes, Arbitrary Sensitivity for Inverse Problems in Piezoelectricity, GAMM Annual Meeting, Wien, 2019.
LibreCat
 
[13]
2018 | Journal Article | LibreCat-ID: 6562
An inverse approach to the characterisation of material parameters of piezoelectric discs with triple-ring-electrodes
N. Feldmann, B. Jurgelucks, L. Claes, V. Schulze, B. Henning, A. Walther, Tm - Technisches Messen 86 (2018) 59–65.
LibreCat | DOI
 
[12]
2018 | Conference Paper | LibreCat-ID: 6584
Efficient optimisation of initial values for characterising piezoelectric material parameters
N. Feldmann, B. Henning, in: Fortschritte Der Akustik, München, 2018, pp. 1275–1278.
LibreCat
 
[11]
2018 | Conference Paper | LibreCat-ID: 6586
Extraction of Interpretable Features from Temporal Measurements using Approximate Prototypes
C. Thiel, N. Feldmann, B. Henning, in: Sensoren Und Messsysteme 2018, VDE Verlag GmbH, 2018, pp. 536–539.
LibreCat
 
[10]
2018 | Misc | LibreCat-ID: 6593
Materialparameter von bleihaltigen und bleifreien Piezokeramiken und ihre Bedeutung in der Anwendung
L. Claes, N. Feldmann, B. Henning, Materialparameter von Bleihaltigen Und Bleifreien Piezokeramiken Und Ihre Bedeutung in Der Anwendung, PI Ceramic Akademie, Lederhose, 2018.
LibreCat
 
[9]
2018 | Misc | LibreCat-ID: 6595
Vollständige Charakterisierung von piezoelektrischen Scheiben mit Ringelektroden
N. Feldmann, B. Jurgelucks, L. Claes, B. Henning, Vollständige Charakterisierung von Piezoelektrischen Scheiben Mit Ringelektroden, Workshop “Messtechnische Anwendungen von Ultraschall”, Drübeck, 2018.
LibreCat
 
[8]
2017 | Conference Paper | LibreCat-ID: 6572
Material parameter determination of a piezoelectric disc with triple-ring-electrodes for increased sensitivity
B. Jurgelucks, N. Feldmann, L. Claes, B. Henning, A. Walther, in: Proceedings of Meetings on Acoustics, Honolulu, 2017, p. 030010.
LibreCat | DOI
 
[7]
2017 | Conference Paper | LibreCat-ID: 6583
Determining fractional Zener model parameters from low frequency DMA measurements
N. Feldmann, F. Bause, B. Henning, in: Proceedings – AMA Conferences 2017, Nürnberg, 2017.
LibreCat | DOI
 
[6]
2017 | Misc | LibreCat-ID: 6591
Spektrale Verfahren zur Bestimmung der akustischen Absorption in fluiden Medien
L. Claes, N. Feldmann, B. Henning, Spektrale Verfahren Zur Bestimmung Der Akustischen Absorption in Fluiden Medien, Workshop “Schallfeldbasierte Messverfahren”, Drübeck, 2017.
LibreCat
 
[5]
2016 | Journal Article | LibreCat-ID: 6551
Ultrasonic transmission measurements in the characterization of viscoelasticity utilizing polymeric waveguides
F. Bause, J. Rautenberg, N. Feldmann, M. Webersen, L. Claes, H. Gravenkamp, B. Henning, Measurement Science and Technology 27 (2016).
LibreCat | DOI
 
[4]
2016 | Conference Paper | LibreCat-ID: 6580 LibreCat | DOI
 
[3]
2016 | Journal Article | LibreCat-ID: 6582 LibreCat | DOI
 
[2]
2016 | Misc | LibreCat-ID: 15176
GUM-konforme Unsicherheitsabschätzung bei inversen Problemen am Beispiel akustischer Transmissionsmessungen
N. Feldmann, F. Bause, B. Henning, GUM-konforme Unsicherheitsabschätzung bei inversen Problemen am Beispiel akustischer Transmissionsmessungen, 2016.
LibreCat
 
[1]
2014 | Misc | LibreCat-ID: 6550
Methoden zur Zeit-Frequenz-Analyse bei der Untersuchung dispersionsbehafteter Signale
F. Bause, J. Rautenberg, N. Feldmann, L. Claes, B. Henning, Methoden zur Zeit-Frequenz-Analyse bei der Untersuchung dispersionsbehafteter Signale, DEGA-Symposium, Bad Honnef, 2014.
LibreCat
 

Search

Filter Publications

Display / Sort

Export / Embed