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@article{CMH_1993__68_2_140315, author = {Shin Nayatani}, title = {Morse index and {Gauss} maps of complete minimal surfaces in {Euclidean} 3-space.}, journal = {Commentarii mathematici Helvetici}, pages = {511--537}, publisher = {mathdoc}, volume = {68}, number = {2}, year = {1993}, zbl = {0797.58018}, url = {http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140315/} }
Shin Nayatani. Morse index and Gauss maps of complete minimal surfaces in Euclidean 3-space.. Commentarii mathematici Helvetici, Tome 68 (1993) no. 2, pp. 511-537. http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140315/