%0 Journal Article %A N. Yu. Kapustin %A E. I. Moiseev %T A spectral problem for the Laplace operator in the square with a spectral parameter in the boundary condition %J Differencialʹnye uravneniâ %D 1998 %P 662-667 %V 34 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1998_34_5_a7/ %G ru %F DE_1998_34_5_a7