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@article{PMIHES_1973__42__5_0, author = {Friedlander, Eric M.}, title = {Fibrations in etale homotopy theory}, journal = {Publications Math\'ematiques de l'IH\'ES}, pages = {5--46}, publisher = {Institut des Hautes \'Etudes Scientifiques}, volume = {42}, year = {1973}, mrnumber = {366929}, zbl = {0351.55011}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PMIHES_1973__42__5_0/} }
Friedlander, Eric M. Fibrations in etale homotopy theory. Publications Mathématiques de l'IHÉS, Tome 42 (1973), pp. 5-46. http://geodesic.mathdoc.fr/item/PMIHES_1973__42__5_0/