Cichoń, Andrzej, Tomasz Boczar, Sebastian Borucki, and Marcin Lorenc. 2014. “Comparative Analysis of the AE Signals Generated by Partial Single- and Multi-Source Discharges”. Archives of Acoustics 32 (4(S): 299-304. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1424.