%0 Journal Article %A Pituk, Michal %T Adjoint operators and boundary value problems for linear differential equations %J Mathematica slovaca %D 1991 %P 351-357 %V 41 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1991__41_4_a1/ %G en %F MASLO_1991__41_4_a1