@article{2575, author = {West, Robert W.}, title = {Some exact sequences of spaces}, journal = {Portugaliae mathematica}, volume = {27}, year = {1968}, pages = {99-117}, zbl = {0196.26704}, mrnumber = {0261603}, language = {en}, url = {http://dml.mathdoc.fr/item/2575} }
West, Robert W. Some exact sequences of spaces. Portugaliae mathematica, Tome 27 (1968) pp. 99-117. http://gdmltest.u-ga.fr/item/2575/