TY - JOUR AU - V. I. Lebedev TI - Difference analogues of orthogonal decompositions, basic differential operators and some boundary problems of mathematical physics. I JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1964 SP - 449 EP - 465 VL - 4 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1964_4_3_a4/ LA - ru ID - ZVMMF_1964_4_3_a4 ER -