%0 Journal Article %A È. A. Polyanskii %A M. V. Fedoryuk %T Reduction of certain boundary-value problems for elliptic equations in a semicylinder to a mixed problem for the heat conduction and Schrödinger equations %J Doklady Akademii Nauk %D 1971 %P 560-563 %V 200 %N 3 %U http://geodesic.mathdoc.fr/item/DAN_1971_200_3_a14/ %G ru %F DAN_1971_200_3_a14