TY - JOUR AU - Yu. N. Valitskii TI - The applicability of the method of finite differences to the investigation of the spectrum of an ordinary differential operator JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1969 SP - 108 EP - 121 VL - 9 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1969_9_1_a7/ LA - ru ID - ZVMMF_1969_9_1_a7 ER -