%0 Journal Article %A P. I. Balk %T An approximational approach in three-dimensional problems on the quantitative interpretation of gravitational anomalies %J Doklady Akademii Nauk %D 1977 %P 548-551 %V 232 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_232_3_a10/ %G ru %F DAN_1977_232_3_a10