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@article{MZ_1972__129_171830, author = {Agnes Chi-Ling Hasu}, title = {A {Characterization} of the {Hopf} {Map} by {Stretch.}}, journal = {Mathematische Zeitschrift}, pages = {195--206}, publisher = {mathdoc}, volume = {129}, year = {1972}, zbl = {0235.53022}, url = {http://geodesic.mathdoc.fr/item/MZ_1972__129_171830/} }
Agnes Chi-Ling Hasu. A Characterization of the Hopf Map by Stretch.. Mathematische Zeitschrift, Tome 129 (1972), pp. 195-206. http://geodesic.mathdoc.fr/item/MZ_1972__129_171830/