%0 Journal Article %A A. N. Zarubin %T A boundary value problem with an involutive shift in the boundary condition %J Differencialʹnye uravneniâ %D 2004 %P 1423-1425 %V 40 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2004_40_10_a18/ %G ru %F DE_2004_40_10_a18