Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1957_116_4_a11, author = {P. L. Ul'yanov}, title = {Permutations within a trigonometric system}, journal = {Doklady Akademii Nauk}, pages = {568--571}, publisher = {mathdoc}, volume = {116}, number = {4}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_116_4_a11/} }
P. L. Ul'yanov. Permutations within a trigonometric system. Doklady Akademii Nauk, Tome 116 (1957) no. 4, pp. 568-571. http://geodesic.mathdoc.fr/item/DAN_1957_116_4_a11/