@article{1206138141, author = {Kobayashi, Teiichi}, title = {On some secondary cohomology operations}, journal = {Hiroshima Math. J.}, volume = {1}, number = {2}, year = {1971}, pages = { 41-73}, language = {en}, url = {http://dml.mathdoc.fr/item/1206138141} }
Kobayashi, Teiichi. On some secondary cohomology operations. Hiroshima Math. J., Tome 1 (1971) no. 2, pp. 41-73. http://gdmltest.u-ga.fr/item/1206138141/