Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1976_229_3_a4, author = {S. A. Peregudov}, title = {On $\Pi$-uniform bases and $\pi$-bases}, journal = {Doklady Akademii Nauk}, pages = {542--545}, publisher = {mathdoc}, volume = {229}, number = {3}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1976_229_3_a4/} }
S. A. Peregudov. On $\Pi$-uniform bases and $\pi$-bases. Doklady Akademii Nauk, Tome 229 (1976) no. 3, pp. 542-545. http://geodesic.mathdoc.fr/item/DAN_1976_229_3_a4/