TY - JOUR AU - M. Imanaliev AU - S. N. Alekseenko TI - On the theory of nonlinear equations with a differential operator JO - Doklady Akademii Nauk PY - 1993 SP - 543 EP - 546 VL - 329 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1993_329_5_a3/ LA - ru ID - DAN_1993_329_5_a3 ER -