Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1998__55_1_47931, author = {Korman, Ph.}, title = {Remarks on {Nagumo's} condition.}, journal = {Portugaliae mathematica}, pages = {1--9}, publisher = {mathdoc}, volume = {55}, number = {1}, year = {1998}, zbl = {0894.34015}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1998__55_1_47931/} }
Korman, Ph. Remarks on Nagumo's condition.. Portugaliae mathematica, Tome 55 (1998) no. 1, pp. 1-9. http://geodesic.mathdoc.fr/item/PORMA_1998__55_1_47931/