TY - JOUR AU - Sh. R. Sharipov AU - A. M. Matvienko TI - Global phase portrait of a two-dimensional system of a special type JO - Differencialʹnye uravneniâ PY - 1983 SP - 1385 EP - 1389 VL - 19 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_8_a11/ LA - ru ID - DE_1983_19_8_a11 ER -