@article{1183526079, author = {Szczarba, R. H.}, title = {Review: D. B. A. Epstein, Cohomology operations}, journal = {Bull. Amer. Math. Soc.}, volume = {70}, number = {6}, year = {1964}, pages = { 482-483}, language = {en}, url = {http://dml.mathdoc.fr/item/1183526079} }
Szczarba, R. H. Review: D. B. A. Epstein, Cohomology operations. Bull. Amer. Math. Soc., Tome 70 (1964) no. 6, pp. 482-483. http://gdmltest.u-ga.fr/item/1183526079/