Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1973_212_1_a11, author = {A. L. Semenov}, title = {Algorithmic problems for power series and context-free grammars}, journal = {Doklady Akademii Nauk}, pages = {50--52}, publisher = {mathdoc}, volume = {212}, number = {1}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_1_a11/} }
A. L. Semenov. Algorithmic problems for power series and context-free grammars. Doklady Akademii Nauk, Tome 212 (1973) no. 1, pp. 50-52. http://geodesic.mathdoc.fr/item/DAN_1973_212_1_a11/