@article{1183525706, author = {Chen, Kuo-Tsai}, title = {On local diffeomorphisms about an elementary fixed point}, journal = {Bull. Amer. Math. Soc.}, volume = {69}, number = {4}, year = {1963}, pages = { 838-840}, language = {en}, url = {http://dml.mathdoc.fr/item/1183525706} }
Chen, Kuo-Tsai. On local diffeomorphisms about an elementary fixed point. Bull. Amer. Math. Soc., Tome 69 (1963) no. 4, pp. 838-840. http://gdmltest.u-ga.fr/item/1183525706/