%0 Journal Article %A E. G. D'yakonov %T Reinforced Sobolev spaces and some new types of elliptic boundary value problems.~II %J Differencialʹnye uravneniâ %D 1998 %P 508-517 %V 34 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1998_34_4_a10/ %G ru %F DE_1998_34_4_a10