Milton S. Plesset* and Philip A. Shaffer, Jr.
P. R. Garabedian, H. Lewy, and M. Schiffer
L.M. Zingangareyeva and O.M. Kiselev
Journal of Applied Mathematics and Mechanics 58 669 (1994)
T. Yao-tsu Wu
Milton S. Plesset and Philip A. Shaffer
Journal of Applied Physics 19 934 (1948)