Analysis of the Forced Vibration of Two Bolted Half-Pipes with Extended Friction Contacts
A. Genzo, W. Sextro, K. Popp, PAMM 5 (2005) 91–92.

Modellgestützte Analyse piezoelektrischer Transformatoren
T. Hemsel, in: Mechatronik 2005 Innovative Produktentwicklung, Düsseldorf, 2005, pp. 1013–1032.

Linear ultrasonic motors based on coupling of longitudinal vibrations
T. Hemsel, M. Mracek, J. Twiefel, P. Vasiljev, J. Wallaschek, in: Proceedings of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA), Yokohama, Japan, 2005, pp. 32–36.

Unkontrollierbare Bewegungen ebener Mechanismen mit Gelenkspiel
A. Hofmeister, W. Sextro, O. Röschel, PAMM 5 (2005) 201–202.

Parallel Operation of Ultrasonic Linear Motors
M. Mracek, T. Hemsel, J. Wallaschek, in: Proceedings of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA), Yokohama, Japan, 2005, pp. 23–24.

Teaching Mechatronics to a Mixed Audience from Industry and University
J. Twiefel, T. Hemsel, C. Kauczor, J. Wallaschek, in: 6th International Workshop on Research and Education in Mechatronics, 2005, pp. 356–361.

Model-based Diagnosis for Sandwiched Ultrasonic Transducers
B. Fu, T. Hemsel, J. Wallaschek, in: Proceedings of the 18th International Congress on Acoustics, ICA, 2004, pp. 4–9.

Systematic mistuning of bladed disk assemblies with friction contacts
F. Götting, W. Sextro, L. Panning, K. Popp, in: Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air, 2004, pp. 257–267.

Linear piezoelectric motors and their application
T. Hemsel, in: Proceedings of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA), Seoul, Korea, 2004.

A novel approach for high power ultrasonic linear motors
T. Hemsel, M. Mracek, J. Wallaschek, P. Vasiljev, in: Ultrasonics Symposium, 2004 IEEE, 2004, pp. 1161–1164.

Hysteretic Friction of a Sliding Rubber Element
M. Lindner, W. Sextro, K. Popp, PAMM 4 (2004) 101–102.

Design criteria for piezoelectric transformers
W. Littmann, T. Hemsel, J. Wallaschek, in: Proceedings of the 18th International Congress on Acoustics, 2004, pp. 2889–2892.

Self configuration of miniature ultrasonic linear motors
M. Mracek, J. Wallaschek, T. Hemsel, in: Proceedings of the 18th International Congress on Acoustics, 2004, pp. 417–420.

Asymmetrical Underplatform Dampers in Gas Turbine Bladings: Theory and Application
L. Panning, K. Popp, W. Sextro, F. Götting, in: Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air, Vienna, Austria, 2004, pp. 269–280.

Model-based Diagnosis for Sandwiched Ultrasonic Transducers
B. Fu, T. Hemsel, J. Wallaschek, in: Proceedings of the 18th International Congress on Acoustics, ICA, 2004, pp. 4–9.

Schwingungsverhalten von verstimmten Beschaufelungen mit Reibelementen
F. Götting, W. Sextro, L. Panning, K. Popp, in: H. Irretier , R. Nordmann, H. Springer (Eds.), Schwingungen in Rotierenden Maschinen VI SIRM, Referate Der Tagung in Darmstadt, Vieweg-Verlag, 2003, pp. 201–210.

Erzwungene Schwingungen von elastischen Mehrkörpersystemen mit Reibkontakten
A. Genzo, W. Sextro, K. Popp, PAMM 2 (2003) 120–121.

Modelling and Analysis of Piezoelectric Transformers
T. Hemsel, J. Wallaschek, in: Proceedings of the 5th International Congress of Intelligent Materials (ICIM), 2003.

Load-adaptive phase-controller for resonant driven piezoelectric devices
W. Littmann, T. Hemsel, C. Kauczor, J. Wallaschek, W. Sinha, in: Proceedings of World Congress Ultrasonics, 2003, pp. 547–550.

Design of Friction Dampers for Mistuned Bladed Disks
L. Panning, W. Sextro, K. Popp, PAMM 3 (2003) 118–119.

Spatial dynamics of tuned and mistuned bladed disks with cylindrical and wedge-shaped friction dampers
L. Panning, W. Sextro, K. Popp, International Journal of Rotating Machinery 9 (2003) 219–228.

Vibration Damping by Friction Forces -Theory and Applications
K. Popp, L. Panning, W. Sextro, Journal of Vibration and Control 9 (2003) 419–448.

Optimierung des Schwingungsverhaltens elastischer Strukturen mit Reibfugen am Beispiel von Turbomaschinenschaufeln
W. Sextro, K. Popp, in: Forschungsvereinigung Verbrennungskraftmaschinen (FW), Frankfurt am Main, Germany, 2003, p. 40.

On forced vibration of shrouded turbine blades
J. Szwedowicz, W. Sextro, R. Visser, P.. Masserey, in: ASME Turbo Expo 2003, Collocated with the 2003 International Joint Power Generation Conference, Atlanta, Georgia, USA, 2003.

Piezoelectric transformers - state of the art and development trends
T. Hemsel, W. Littmann, J. Wallaschek, in: Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE, 2002, pp. 645–648.

Piezoelektrische Transformatoren - Bauformen und Modellierung
T. Hemsel, W. Littmann, J. Wallaschek, in: 47. Internationales Wissenschaftliches Kolloquium, 2002.

Optimization of the Contact Geometry between Turbine Blades and Underplatform Dampers with respect to Friction Damping
L. Panning, W. Sextro, K. Popp, in: Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air, Amsterdam, Niederlande, 2002.

Spatial dynamics of tuned and mistuned bladed disks with cylindrical and wedge-shaped friction dampers
L. Panning, W. Sextro, K. Popp, in: Proceedings of the 9th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC, Honolulu, Hawaii, USA, 2002.

Fast Calculation of the Statistics of the Forced Response of Mistuned Bladed Disk Assemblies with Friction Contacts
W. Sextro, L. Panning, F. Götting, in: Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air, Amsterdam, Niederlande, 2002.

Optimierung des Schwingungsverhaltens elastischer Strukturen mit Reibfugen
W. Sextro, K. Popp, in: Forschungsvereinigung Verbrennungskraftmaschinen (FW) - Lnformationstagung Turbinen, Frankfurt am Main, Germany, 2002, pp. 157–183.

Untersuchung und Weiterentwicklung linearer piezoelektrischer Schwingungsantriebe
T. Hemsel, Untersuchung und Weiterentwicklung linearer piezoelektrischer Schwingungsantriebe, Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn, 2001.

Schwingungsanalyse verstimmter Schaufelkränze mit Reibelementen
L. Panning, W. Sextro, K. Popp, in: H. Irretier, R. Nordmann, H. Springer (Eds.), Schwingungen in Rotierenden Maschinen VI SIRM, Referate Der Tagung in Wien, Vieweg-Verlag, 2001, pp. 297–306.

Heat and Wear Generation for Rolling Contacts
W. Sextro, Zeitschrift Für Angewandte Mathematik Und Mechanik (ZAMM) 81 (2001) 225–226.

Development and Experimental Validation of a Point Contact Model for Dynamical Problems with Friction
W. Sextro, in: ASME Design Engineering Technical Conferences, Pittsburgh, Pennsylvania, USA, 2001, pp. 1–12.

Localization in Nonlinear Mistuned Systems with Cyclic Symmetry
W. Sextro, K. Popp, T. Krzyzynski, Nonlinear Dynamics 25 (2001) 207–220.

Piezoelektrische lineare Schwingungsantriebe
J. Wallaschek, T. Hemsel, in: Special Antriebstechnik, 2001, pp. 70–71.

Survey of the present state of the art of piezoelectric linear motors
T. Hemsel, J. Wallaschek, Ultrasonics 38 (2000) 37–40.

State of the art and development trends of ultrasonic linear motors
T. Hemsel, J. Wallaschek, in: Ultrasonics Symposium, 2000 IEEE, 2000, pp. 663–666 vol.1.

Piezoelectic linear motors
T. Hemsel, J. Wallaschek, in: Tagungsband Der ACTUATOR, Bremen, 2000, pp. 250–253.

Stand der Technik und Entwicklungsperspektiven linearer piezoelektrischer Schwingungsantriebe
T. Hemsel, J. Wallaschek, 1533 (2000) 147–166.

On some regularities in dynamic response of cyclic periodic structures
T. Krzyzynski, K. Popp, W. Sextro, Chaos, Solitons \'26; Fractals 11 (2000) 1597–1609.

Optimization of Interblade Friction Damper
L. Panning, W. Sextro, K. Popp, in: International Gas Turbine \'26; Aeroengine Congress \'26; Exhibition, ASME, Munich, Germany, 2000, pp. 1–8.

The Calculation of the Forced Response of Shrouded Blades with Friction Contacts and Its Experimental Verification
W. Sextro, in: International Gas Turbine \'26; Aeroengine Congress \'26; Exhibition, ASME, Munich, Germany, 2000, pp. 1–8.

Schwingungsanalyse von vorgespannten Schaufeln mit Deckplatten im Schaufelkranz
K. Popp, W. Sextro, in: Forschungsvereinigung Verbrennungskraftmaschinen (FW) -Lnformationstagung Turbinen, Heidelberg, 1999, pp. 21–38.

Experimental verification of a non-Hertzian contact model
W. Sextro, in: International Conference on Computational Methods in Contact Mechanics, 1999, pp. 181–190.

Forced Vibration of Elastic Structures with Friction Contacts
W. Sextro, in: ASME Design Engineering Technical Conferences, Las Vegas, Nevada, USA, 1999, pp. 1–10.

Ein ebenes Reibkontaktmodell zur Berechnung von Schaufelschwingungen mit Reibelementen
W. Sextro, K. Popp, Zeitschrift Für Angewandte Mathematik Und Mechanik (ZAMM) 79 (1999) 311–312.

Schwingungsanalyse von vorgespannten Schaufeln mit Deckplatten im Schaufelkranz
W. Sextro, K. Popp, in: Forschungsvereinigung Verbrennungskraftmaschinen (FW), Frankfurt am Main, Germany, 1999, p. 56.

Modellierung piezoelektrischer Stapel- und Vielschichtaktoren für dynamischen Betrieb
T. Hemsel, J. Krome, W. Littmann, J. Wallaschek, in: Proceedings 2. Polnisch-Deutscher Workshop “Werkzeuge Der Mechatronik,” Ilmenau, Deutschland, 1998.

A piezoelectric linear vibration drive for high driving forces
T. Hemsel, J. Wallaschek, in: Proceedings of VIBROENGINEERING, 1998, pp. 7–12.

Vibrational Behaviour of Tuned and Detuned Bladed Disks with Friction Dampers
W. Sextro, K. Popp, I. Wolter, in: International Congress on Combustion Engines, Proceedings of the 22nd CIMAC, Kopenhagen, D\'22anemark, 1998, pp. 257–270.

Three-Dimensional Vibration of Bladed Disk Assemblies with Friction Dampers
W. Sextro, K. Popp, I. Wolter, in: The 7th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Proceedings of ISROMAC-7, Honolulu, Hawaii, USA, 1998, pp. 621–630.

Schwingungsprüfstand zur vollautomatischen Messung von Ultraschallschwingungen in piezoelektrischen Antrieben
S. Goldschmidt, T. Hemsel, J. Krome, H. Storck, J. Wallaschek, in: Tagungsband Zum 4. Laser Vibrometer Seminar Der Polytec GmbH, Waldbronn, Deutschland, 1997.

Ultrasonic motors for linear positioning tasks in automobiles
T. Hemsel, J. Wallaschek, in: Proceedings of the 30th International Symposium on Automotive Technology \'26; Automation (ISATA), Florenz, Italien, 1997, pp. 631–637.

Piezoelectric ultrasonic linear motors
T. Hemsel, J. Wallaschek, in: EUROMECH, European Mechanics Colloquium “Synthesis of Mechatronic Sytems,” Duisburg, 1997.

Schwingungsverhalten von verstimmten Beschaufelungen mit Reibelementen
K. Popp, W. Sextro, in: Forschungsvereinigung Verbrennungskraftmaschinen (FW) -Lnformationstagung Turbinen, Frankfurt am Main, Germany, 1997, pp. 131–142.

Schwingungsverhalten von Schaufelkränzen mit Reibelementen bei Frequenzverstimmung
W. Sextro, in: VDI-Reihe, VDI-Verlag, Düsseldorf, 1997.

Improved reliability of bladed disks due to friction dampers
W. Sextro, K. Popp, I. Wolter, in: The 1997 International Gas Turbine \'26; Aeroengine Congress \'26; Exposition, 1997.

Schwingungsverhalten eines Schaufelkranzes mit Reibelementen bei Frequenzverstimmung
K. Popp, W. Sextro, in: Forschungsvereinigung Verbrennungskraftmaschinen (FW) - Lnformationstagung Turbinen, Frankfurt am Main, Germany, 1996, pp. 53–76.

Dynamical Behaviour of a Bladed Disk with Friction Dampers
K. Popp, W. Sextro, in: The 2nd European Nonlinear Oscillation Conference - Proceedings of EUROMECH, Prag, 1996, pp. 157–183.

Static Behaviour of Drill Strings in Curved Boreholes
W. Sextro, B. Schmalhorst, Zeitschrift Für Angewandte Mathematik Und Mechanik (ZAMM) 73 (1993) 255–257.

Bifurcations in Dynamic Systems with Dry Friction
P. Stelter, W. Sextro, in: R. Seydel, F.W. Schneider, T. Küpper, H. Troger (Eds.), Bifurcation and Chaos: Analysis, Algorithms, Applications, Birkhäuser Basel, 1991, pp. 343–347.