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@article{JRAM_1991__414_153297, author = {Kunio Sakamoto}, title = {Stability of the equator map.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {23--44}, publisher = {mathdoc}, volume = {414}, year = {1991}, zbl = {0731.58020}, url = {http://geodesic.mathdoc.fr/item/JRAM_1991__414_153297/} }
Kunio Sakamoto. Stability of the equator map.. Journal für die reine und angewandte Mathematik, Tome 414 (1991), pp. 23-44. http://geodesic.mathdoc.fr/item/JRAM_1991__414_153297/