@article{1183499325, author = {Walker, R. J.}, title = {The Betti numbers of cyclic products}, journal = {Bull. Amer. Math. Soc.}, volume = {42}, number = {12}, year = {1936}, pages = { 709-714}, language = {en}, url = {http://dml.mathdoc.fr/item/1183499325} }
Walker, R. J. The Betti numbers of cyclic products. Bull. Amer. Math. Soc., Tome 42 (1936) no. 12, pp. 709-714. http://gdmltest.u-ga.fr/item/1183499325/