@article{GDZPPN002057557, title = {Fibrations and Cocategory.}, journal = {Commentarii mathematici Helvetici}, volume = {35}, year = {1961}, pages = {15-24}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN002057557} }
Ganea, Tudor. Fibrations and Cocategory.. Commentarii mathematici Helvetici, Tome 35 (1961) pp. 15-24. http://gdmltest.u-ga.fr/item/GDZPPN002057557/