TY - JOUR AU - E. I. Moiseev TI - Solution of degenerate equations by means of biorthogonal series JO - Differencialʹnye uravneniâ PY - 1991 SP - 94 EP - 103 VL - 27 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1991_27_1_a10/ LA - ru ID - DE_1991_27_1_a10 ER -