@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/