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@article{PORMA_1959__18_4_114830, author = {Wu, Ta-Sun}, title = {A note on the general cohomology theory}, journal = {Portugaliae mathematica}, pages = {231--233}, publisher = {mathdoc}, volume = {18}, number = {4}, year = {1959}, mrnumber = {0126268}, zbl = {0111.35402}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1959__18_4_114830/} }
Wu, Ta-Sun. A note on the general cohomology theory. Portugaliae mathematica, Tome 18 (1959) no. 4, pp. 231-233. http://geodesic.mathdoc.fr/item/PORMA_1959__18_4_114830/