FILIPCZYŃSKI, Leszek, and Tamara KUJAWSKA. “The Reflection of a Gaussian Pulse of a Plane Ultrasonic Wave from Rigid and Elastic Spheres in Water”. Archives of Acoustics 12, no. 2 (June 30, 1987): 113–128. Accessed March 4, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/3085.