Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1986_288_2_a9, author = {V. A. Smirnov}, title = {Secondary cohomology operations}, journal = {Doklady Akademii Nauk}, pages = {301--304}, publisher = {mathdoc}, volume = {288}, number = {2}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1986_288_2_a9/} }
V. A. Smirnov. Secondary cohomology operations. Doklady Akademii Nauk, Tome 288 (1986) no. 2, pp. 301-304. http://geodesic.mathdoc.fr/item/DAN_1986_288_2_a9/