TY  - JOUR
AU  - I. E. Vitrichenko
TI  - On the stability in the critical case of a zero root and of a pair of purely imaginary roots of a nonautonomous $n$th order quasilinear equation
JO  - Differencialʹnye uravneniâ
PY  - 1990
SP  - 2027
EP  - 2046
VL  - 26
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1990_26_12_a0/
LA  - ru
ID  - DE_1990_26_12_a0
ER  -