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@article{AA_1990_2_6_a12, author = {I. R. Shafarevich}, title = {Deformations of commutative algebras of class~2}, journal = {Algebra i analiz}, pages = {178--196}, publisher = {mathdoc}, volume = {2}, number = {6}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1990_2_6_a12/} }
I. R. Shafarevich. Deformations of commutative algebras of class~2. Algebra i analiz, Tome 2 (1990) no. 6, pp. 178-196. http://geodesic.mathdoc.fr/item/AA_1990_2_6_a12/