TY - JOUR AU - V. S. Kozlova TI - Rough singular points situated on the line of discontinuity of the right- hand sides of systems of differential equations JO - Differencialʹnye uravneniâ PY - 1984 SP - 1998 EP - 1999 VL - 20 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1984_20_11_a23/ LA - ru ID - DE_1984_20_11_a23 ER -