Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1966_170_1_a1, author = {D. L. Berman}, title = {Extremal problems in the theory of polynomial operations}, journal = {Doklady Akademii Nauk}, pages = {13--16}, publisher = {mathdoc}, volume = {170}, number = {1}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_170_1_a1/} }
D. L. Berman. Extremal problems in the theory of polynomial operations. Doklady Akademii Nauk, Tome 170 (1966) no. 1, pp. 13-16. http://geodesic.mathdoc.fr/item/DAN_1966_170_1_a1/