%0 Journal Article %A M. A. Sadybekov %A B. K. Turmetov %T On analogues of periodic boundary value problems for the Laplace operator in a ball %J Eurasian mathematical journal %D 2012 %P 143-146 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/EMJ_2012_3_1_a10/ %G en %F EMJ_2012_3_1_a10