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@article{MM2_1991__71_3_155616, author = {John R. Klein}, title = {Coordinate morse theory.}, journal = {Manuscripta mathematica}, pages = {283--294}, publisher = {mathdoc}, volume = {71}, number = {3}, year = {1991}, zbl = {0727.58010}, url = {http://geodesic.mathdoc.fr/item/MM2_1991__71_3_155616/} }
John R. Klein. Coordinate morse theory.. Manuscripta mathematica, Tome 71 (1991) no. 3, pp. 283-294. http://geodesic.mathdoc.fr/item/MM2_1991__71_3_155616/