@article{1200694559, author = {Ikeda, Hiroshi}, title = {Non-contractible acyclic normal spines}, journal = {Osaka J. Math.}, volume = {10}, number = {1}, year = {1973}, pages = { 511-520}, language = {en}, url = {http://dml.mathdoc.fr/item/1200694559} }
Ikeda, Hiroshi. Non-contractible acyclic normal spines. Osaka J. Math., Tome 10 (1973) no. 1, pp. 511-520. http://gdmltest.u-ga.fr/item/1200694559/