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@article{MZM_1991_50_1_a22, author = {O. A. Timoshin}, title = {Approximation of differential polynomials on classes of vector functions}, journal = {Matemati\v{c}eskie zametki}, pages = {153--155}, publisher = {mathdoc}, volume = {50}, number = {1}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1991_50_1_a22/} }
O. A. Timoshin. Approximation of differential polynomials on classes of vector functions. Matematičeskie zametki, Tome 50 (1991) no. 1, pp. 153-155. http://geodesic.mathdoc.fr/item/MZM_1991_50_1_a22/