TY - JOUR AU - V. S. Pronkin TI - On the existence of a quasiperiodic solution of a nonlinear differential equation JO - Differencialʹnye uravneniâ PY - 1992 SP - 1339 EP - 1346 VL - 28 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1992_28_8_a5/ LA - ru ID - DE_1992_28_8_a5 ER -