TY - JOUR AU - L. B. Zelenko TI - Discreteness conditions for the spectrum of the Sturm-Liouville operator in a space of vector functions JO - Matematičeskie zametki PY - 1967 SP - 583 EP - 588 VL - 1 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1967_1_5_a10/ LA - ru ID - MZM_1967_1_5_a10 ER -