Differentiable isotopies on the $2$-sphere.
Munkres, James
Michigan Math. J., Tome 7 (1960) no. 1, p. 193-197 / Harvested from Project Euclid
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Publié le : 1960-05-14
Classification:  57.10,  57.20 
@article{1028998426,
     author = {Munkres, James},
     title = {Differentiable isotopies on the $2$-sphere.},
     journal = {Michigan Math. J.},
     volume = {7},
     number = {1},
     year = {1960},
     pages = { 193-197},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1028998426}
}

Munkres, James. Differentiable isotopies on the $2$-sphere.. Michigan Math. J., Tome 7 (1960) no. 1, pp.  193-197. http://gdmltest.u-ga.fr/item/1028998426/