TY - JOUR AU - A. N. Shoshitaishvili TI - Bifurcations of topological type at singular points of parametrized vector fields JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1972 SP - 97 EP - 98 VL - 6 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1972_6_2_a17/ LA - ru ID - FAA_1972_6_2_a17 ER -