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@article{AA_1997_9_4_a11, author = {I. S. Ponizovskii}, title = {On a problem of {B.\,I.~Plotkin}}, journal = {Algebra i analiz}, pages = {249--256}, publisher = {mathdoc}, volume = {9}, number = {4}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1997_9_4_a11/} }
I. S. Ponizovskii. On a problem of B.\,I.~Plotkin. Algebra i analiz, Tome 9 (1997) no. 4, pp. 249-256. http://geodesic.mathdoc.fr/item/AA_1997_9_4_a11/