TY - JOUR AU - Došlý, Ondřej TI - On some problems in the oscillation theory of self-adjoint linear differential equations JO - Mathematica slovaca PY - 1991 SP - 101 EP - 111 VL - 41 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1991__41_1_a12/ LA - en ID - MASLO_1991__41_1_a12 ER -