TY - JOUR AU - Pituk, Michal TI - Adjoint operators and boundary value problems for linear differential equations JO - Mathematica slovaca PY - 1991 SP - 351 EP - 357 VL - 41 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1991__41_4_a1/ LA - en ID - MASLO_1991__41_4_a1 ER -