TY  - JOUR
AU  - J. Hay
TI  - Necessary Conditions for the Existence of Global Solutions of Systems of Higher-Order Nonlinear Ordinary Differential Equations and Inequalities
JO  - Differencialʹnye uravneniâ
PY  - 2003
SP  - 246
EP  - 252
VL  - 39
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2003_39_2_a10/
LA  - ru
ID  - DE_2003_39_2_a10
ER  -