%0 Journal Article %A D. I. Borisov %T Boundary-value problem in a~cylinder with frequently changing type of boundary %J Sbornik. Mathematics %D 2002 %P 977-1008 %V 193 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2002_193_7_a1/ %G en %F SM_2002_193_7_a1