%0 Journal Article %A S. V. Nemchinov %T Solution by a non-iteration net method of boundary-value problems for partial differential equations with periodic boundary conditions %J Doklady Akademii Nauk %D 1962 %P 1263-1266 %V 146 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_146_6_a4/ %G ru %F DAN_1962_146_6_a4