@article{1029002209, author = {Chang, Theodore}, title = {Equivariant maps with nonzero Hopf invariant.}, journal = {Michigan Math. J.}, volume = {26}, number = {1}, year = {1979}, pages = { 151-159}, language = {en}, url = {http://dml.mathdoc.fr/item/1029002209} }
Chang, Theodore. Equivariant maps with nonzero Hopf invariant.. Michigan Math. J., Tome 26 (1979) no. 1, pp. 151-159. http://gdmltest.u-ga.fr/item/1029002209/