TY  - JOUR
AU  - Norman Levinson
TI  - On stability of non-linear systems of differential equations
JO  - Colloquium Mathematicum
PY  - 1949
SP  - 40
EP  - 45
VL  - 2
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-2-1-40-45/
DO  - 10.4064/cm-2-1-40-45
LA  - en
ID  - 10_4064_cm_2_1_40_45
ER  -