%0 Journal Article %A V. A. Il'in %A E. I. Moiseev %T The Sturm–Liouville operator with a nonlocal boundary condition of the second kind %J Doklady Akademii Nauk %D 1987 %P 1340-1345 %V 294 %N 6 %U http://geodesic.mathdoc.fr/item/DAN_1987_294_6_a12/ %G ru %F DAN_1987_294_6_a12