@article{1256052818, author = {Siegel, Jerrold}, title = {Cohomology operations in local coefficient theory}, journal = {Illinois J. Math.}, volume = {15}, number = {4}, year = {1971}, pages = { 52-63}, language = {en}, url = {http://dml.mathdoc.fr/item/1256052818} }
Siegel, Jerrold. Cohomology operations in local coefficient theory. Illinois J. Math., Tome 15 (1971) no. 4, pp. 52-63. http://gdmltest.u-ga.fr/item/1256052818/