TY  - JOUR
AU  - S. M. Gusein-Zade
TI  - Singularities admitting perturbations with a small number of critical values
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1987
SP  - 76
EP  - 77
VL  - 21
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1987_21_1_a11/
LA  - ru
ID  - FAA_1987_21_1_a11
ER  -