TY - JOUR AU - I. R. Shafarevich TI - Deformations of commutative algebras of class~2 JO - Algebra i analiz PY - 1990 SP - 178 EP - 196 VL - 2 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_1990_2_6_a12/ LA - ru ID - AA_1990_2_6_a12 ER -