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@article{MZM_1987_41_3_a5, author = {K. V. Safonov}, title = {Conditions for the sum of a power series to be algebraic and rational}, journal = {Matemati\v{c}eskie zametki}, pages = {325--332}, publisher = {mathdoc}, volume = {41}, number = {3}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1987_41_3_a5/} }
K. V. Safonov. Conditions for the sum of a power series to be algebraic and rational. Matematičeskie zametki, Tome 41 (1987) no. 3, pp. 325-332. http://geodesic.mathdoc.fr/item/MZM_1987_41_3_a5/