@article{1102991861, author = {Hyman, D. M.}, title = {A generalization of the Borsuk-Whitehead-Hanner theorem.}, journal = {Pacific J. Math.}, volume = {23}, number = {3}, year = {1967}, pages = { 263-271}, language = {en}, url = {http://dml.mathdoc.fr/item/1102991861} }
Hyman, D. M. A generalization of the Borsuk-Whitehead-Hanner theorem.. Pacific J. Math., Tome 23 (1967) no. 3, pp. 263-271. http://gdmltest.u-ga.fr/item/1102991861/