FILIPCZYŃSKI, Leszek, and Tamara KUJAWSKA. “Acoustical Shadow of a Sphere Immersed in Water. I”. Archives of Acoustics 14, no. 1-2 (July 10, 2015): 29–43. Accessed January 17, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/3035.