Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1965_160_2_a6, author = {A. I. Mal'tsev}, title = {Positive and negative enumerations}, journal = {Doklady Akademii Nauk}, pages = {278--280}, publisher = {mathdoc}, volume = {160}, number = {2}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_2_a6/} }
A. I. Mal'tsev. Positive and negative enumerations. Doklady Akademii Nauk, Tome 160 (1965) no. 2, pp. 278-280. http://geodesic.mathdoc.fr/item/DAN_1965_160_2_a6/