@article{MZ_1966__92_170568, author = {Yasutoshi Nomura}, title = {Homotopy {Equivalences} in a {Principal} {Fibre} {Space.}}, journal = {Mathematische Zeitschrift}, pages = {380--388}, publisher = {mathdoc}, volume = {92}, year = {1966}, zbl = {0139.16602}, url = {http://geodesic.mathdoc.fr/item/MZ_1966__92_170568/} }