@articleHemsel_Bornmann_Morita_Sondermann-Wölke_Sextro_2014, title=Reliability analysis of ultrasonic power transducers, DOI=10.1007/s00419-014-0965-4, journal=Archive of Applied Mechanics, publisher=Springer Berlin Heidelberg, author=Hemsel, Tobias and Bornmann, Peter and Morita, Takeshi and Sondermann-Wölke, Christoph and Sextro, Walter, year=2014, pages=1–7