Koleňák, R., Prach, M. and Kostolný, I. 2016. ULTRASONIC SOLDERING OF Cu AND Al2O3 CERAMICS BY USE OF Bi-La AND Bi-Ag-La SOLDERS. Acta Polytechnica. 56, 2 (Apr. 2016), 126–131. DOI:https://doi.org/10.14311/AP.2016.56.0126.