%0 Journal Article %A Onuchic, Nelson %T Asymptotic equivalence between two systems of ordinary differential equations %J Portugaliae mathematica %D 1971 %P 97-105 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1971__30_2_115145/ %G en %F PORMA_1971__30_2_115145