TY - JOUR AU - V. I. Matatov TI - On the character of movable singular points of some Hamiltonian systems JO - Differencialʹnye uravneniâ PY - 1981 SP - 1502 EP - 1503 VL - 17 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1981_17_8_a19/ LA - ru ID - DE_1981_17_8_a19 ER -