DELEKTA, Olga, and Aleksander OPILSKI. “Measurements of Propagation Velocity of Ultrasonic Wave at a Frequency of 10 MHz in Pure and Deuterated KDP Single Crystals”. Archives of Acoustics 5, no. 2 (June 30, 1980): 181–188. Accessed March 4, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/3337.