[1]
A. BRAŃSKI and L. LENIOWSKA, “Far field of a concentric ring vibrating with constant velocity on a rigid sphere”, Arch. Acoust., vol. 17, no. 2, pp. 277–286, Jun. 1992, Accessed: Apr. 18, 2026. [Online]. Available: http://acoustics.ippt.gov.pl/index.php/aa/article/view/1188