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@article{AM2_1987__32_137176, author = {J.A. Lester}, title = {Angle-preserving transformations of spheres.}, journal = {Aequationes mathematicae}, pages = {52--57}, publisher = {mathdoc}, volume = {32}, year = {1987}, zbl = {0617.51020}, url = {http://geodesic.mathdoc.fr/item/AM2_1987__32_137176/} }
J.A. Lester. Angle-preserving transformations of spheres.. Aequationes mathematicae, Tome 32 (1987), pp. 52-57. http://geodesic.mathdoc.fr/item/AM2_1987__32_137176/