Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1997__47_4_a9, author = {Sakai, Kazuhiro}, title = {On positively expansive differentiable maps}, journal = {Mathematica slovaca}, pages = {479--482}, publisher = {mathdoc}, volume = {47}, number = {4}, year = {1997}, mrnumber = {1796960}, zbl = {0977.37017}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1997__47_4_a9/} }
Sakai, Kazuhiro. On positively expansive differentiable maps. Mathematica slovaca, Tome 47 (1997) no. 4, pp. 479-482. http://geodesic.mathdoc.fr/item/MASLO_1997__47_4_a9/