%0 Journal Article %A A. M. Radin %A V. P. Shestopalov %T Diffraction of waves by a sphere with holes %J Doklady Akademii Nauk %D 1973 %P 838-841 %V 212 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_212_4_a16/ %G ru %F DAN_1973_212_4_a16