@article{GDZPPN00241130X, title = {Factorisation Theorems and Projective Spaces in Topology.}, journal = {Mathematische Zeitschrift}, volume = {129}, year = {1972}, pages = {256-264}, zbl = {0226.54009}, url = {http://dml.mathdoc.fr/item/GDZPPN00241130X} }
Dyckhoff, Roy. Factorisation Theorems and Projective Spaces in Topology.. Mathematische Zeitschrift, Tome 129 (1972) pp. 256-264. http://gdmltest.u-ga.fr/item/GDZPPN00241130X/