@articleKrzyzynski_Popp_Sextro_2000, title=On some regularities in dynamic response of cyclic periodic structures, volume=11, DOI=10.1016/S0960-0779(99)00080-6, number=10, journal=Chaos, Solitons \'26; Fractals, author=Krzyzynski, Tomasz and Popp, Karl and Sextro, Walter, year=2000, pages=1597–1609 

@inproceedingsPanning_Sextro_Popp_2000, place=Munich, Germany, title=Optimization of Interblade Friction Damper, booktitle=International Gas Turbine \'26; Aeroengine Congress \'26; Exhibition, ASME, author=Panning, Lars and Sextro, Walter and Popp, Karl, year=2000, pages=1–8 

@inproceedingsSextro_2000, place=Munich, Germany, title=The Calculation of the Forced Response of Shrouded Blades with Friction Contacts and Its Experimental Verification, booktitle=International Gas Turbine \'26; Aeroengine Congress \'26; Exhibition, ASME, author=Sextro, Walter, year=2000, pages=1–8 

@inproceedingsPopp_Sextro_1999, place=Heidelberg, title=Schwingungsanalyse von vorgespannten Schaufeln mit Deckplatten im Schaufelkranz, number=504, booktitle=Forschungsvereinigung Verbrennungskraftmaschinen (FW) -lnformationstagung Turbinen, author=Popp, Karl and Sextro, Walter, year=1999, pages=21–38 

@inproceedingsSextro_1999, title=Experimental verification of a non-Hertzian contact model, booktitle=International conference on computational methods in contact mechanics, author=Sextro, Walter, year=1999, pages=181–190 

@inproceedingsSextro_1999, place=Las Vegas, Nevada, USA, title=Forced Vibration of Elastic Structures with Friction Contacts, number=DET/VIB-8180, booktitle=ASME Design Engineering Technical Conferences, author=Sextro, Walter, year=1999, pages=1–10 

@articleSextro_Popp_1999, title=Ein ebenes Reibkontaktmodell zur Berechnung von Schaufelschwingungen mit Reibelementen, volume=79, journal=Zeitschrift für angewandte Mathematik und Mechanik (ZAMM), author=Sextro, Walter and Popp, Karl, year=1999, pages=311–312 

@inproceedingsSextro_Popp_1999, place=Frankfurt am Main, Germany, title=Schwingungsanalyse von vorgespannten Schaufeln mit Deckplatten im Schaufelkranz, number=686, booktitle=Forschungsvereinigung Verbrennungskraftmaschinen (FW), author=Sextro, Walter and Popp, Karl, year=1999, pages=56 

@inproceedingsHemsel_Krome_Littmann_Wallaschek_1998, place=Ilmenau, Deutschland, title=Modellierung piezoelektrischer Stapel- und Vielschichtaktoren für dynamischen Betrieb, booktitle=Proceedings 2. Polnisch-Deutscher Workshop “Werkzeuge der Mechatronik”, author=Hemsel, Tobias and Krome, Jürgen and Littmann, Walter and Wallaschek, Jörg, year=1998 

@inproceedingsHemsel_Wallaschek_1998, title=A piezoelectric linear vibration drive for high driving forces, number=1, booktitle=Proceedings of VIBROENGINEERING, author=Hemsel, Tobias and Wallaschek, Jörg, year=1998, pages=7–12 

@inproceedingsSextro_Popp_Wolter_1998, place=Kopenhagen, D\'22anemark, title=Vibrational Behaviour of Tuned and Detuned Bladed Disks with Friction Dampers, volume=1, booktitle=International Congress on Combustion Engines, Proceedings of the 22nd CIMAC, author=Sextro, Walter and Popp, Karl and Wolter, I, year=1998, pages=257–270 

@inproceedingsSextro_Popp_Wolter_1998, place=Honolulu, Hawaii, USA, title=Three-Dimensional Vibration of Bladed Disk Assemblies with Friction Dampers, volume=B, booktitle=The 7th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Proceedings of ISROMAC-7, author=Sextro, Walter and Popp, Karl and Wolter, I, year=1998, pages=621–630 

@inproceedingsGoldschmidt_Hemsel_Krome_Storck_Wallaschek_1997, place=Waldbronn, Deutschland, title=Schwingungsprüfstand zur vollautomatischen Messung von Ultraschallschwingungen in piezoelektrischen Antrieben, booktitle=Tagungsband zum 4. Laser Vibrometer Seminar der Polytec GmbH, author=Goldschmidt, Stefan and Hemsel, Tobias and Krome, Jürgen and Storck, Heiner and Wallaschek, Jörg, year=1997 

@inproceedingsHemsel_Wallaschek_1997, place=Florenz, Italien, title=Ultrasonic motors for linear positioning tasks in automobiles, booktitle=Proceedings of the 30th International Symposium on Automotive Technology \'26; Automation (ISATA), author=Hemsel, Tobias and Wallaschek, Jörg, year=1997, pages=631–637 

@inproceedingsHemsel_Wallaschek_1997, place=Duisburg, title=Piezoelectric ultrasonic linear motors, number=370, booktitle=EUROMECH, European Mechanics Colloquium “Synthesis of Mechatronic Sytems”, author=Hemsel, Tobias and Wallaschek, Jörg, year=1997 

@inproceedingsPopp_Sextro_1997, place=Frankfurt am Main, Germany, title=Schwingungsverhalten von verstimmten Beschaufelungen mit Reibelementen, number=496, booktitle=Forschungsvereinigung Verbrennungskraftmaschinen (FW) -lnformationstagung Turbinen, author=Popp, Karl and Sextro, Walter, year=1997, pages=131–142 

@inproceedingsSextro_1997, title=Schwingungsverhalten von Schaufelkränzen mit Reibelementen bei Frequenzverstimmung, volume=11, number=245, booktitle=VDI-Reihe, publisher=VDI-Verlag, Düsseldorf, author=Sextro, Walter, year=1997 

@inproceedingsSextro_Popp_Wolter_1997, title=Improved reliability of bladed disks due to friction dampers, booktitle=The 1997 International Gas Turbine \'26; Aeroengine Congress \'26; Exposition, author=Sextro, Walter and Popp, Karl and Wolter, Ivo, year=1997 

@inproceedingsPopp_Sextro_1996, place=Frankfurt am Main, Germany, title=Schwingungsverhalten eines Schaufelkranzes mit Reibelementen bei Frequenzverstimmung, number=490, booktitle=Forschungsvereinigung Verbrennungskraftmaschinen (FW) - lnformationstagung Turbinen, author=Popp, Karl and Sextro, Walter, year=1996, pages=53–76 

@inproceedingsPopp_Sextro_1996, place=Prag, title=Dynamical Behaviour of a Bladed Disk with Friction Dampers, volume=1, number=518, booktitle=The 2nd European Nonlinear Oscillation Conference - Proceedings of EUROMECH, author=Popp, Karl and Sextro, Walter, year=1996, pages=157–183