%0 Journal Article %A I. A. Kipriyanov %T Boundary-value problems for partial differential equations with the Bessel differential operator %J Doklady Akademii Nauk %D 1964 %P 275-278 %V 158 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_158_2_a6/ %G ru %F DAN_1964_158_2_a6