TY - JOUR AU - A. B. Givental' TI - Displacement of invariants of groups that are generated by reflections and are connected with simple singularities of functions JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1980 SP - 4 EP - 14 VL - 14 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1980_14_2_a1/ LA - ru ID - FAA_1980_14_2_a1 ER -