PŁOWIEC, R., and G. BERCHIESI. “Comparison of Shear Ultrasonic Results of Electrolyte-Acetamide Molten Mixtures”. Archives of Acoustics 19, no. 4 (December 31, 1994): 533–538. Accessed March 4, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/1126.