@article{1183524912, author = {Wallace, Andrew H.}, title = {A geometric method in differential topology}, journal = {Bull. Amer. Math. Soc.}, volume = {68}, number = {6}, year = {1962}, pages = { 533-542}, language = {en}, url = {http://dml.mathdoc.fr/item/1183524912} }
Wallace, Andrew H. A geometric method in differential topology. Bull. Amer. Math. Soc., Tome 68 (1962) no. 6, pp. 533-542. http://gdmltest.u-ga.fr/item/1183524912/