@article{1028999722, author = {Spanier, E.}, title = {The homotopy excision theorem.}, journal = {Michigan Math. J.}, volume = {14}, number = {1}, year = {1967}, pages = { 245-255}, language = {en}, url = {http://dml.mathdoc.fr/item/1028999722} }
Spanier, E. The homotopy excision theorem.. Michigan Math. J., Tome 14 (1967) no. 1, pp. 245-255. http://gdmltest.u-ga.fr/item/1028999722/