SOCZKIEWICZ, Eugeniusz. 2016. “VIIIConference on the Utilization of Ultrasonic Methods for Studying the Properties of Condensed Matter – Zilina (Czechoslovakia) 1–4 September, 1982”. Archives of Acoustics 8 (1): 95-96. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3246.