TY  - BOOK
AU  - Nemyt͡s︡kiĭ,V.V.
AU  - Stepanov,V.V.
TI  - Qualitative theory of differential equations,
U1  - 515.35 NEM 
PY  - 1960///
CY  - Princeton, N.J.
PB  - Princeton University Press
KW  - Differential equations
KW  - Dynamics
N1  - Includes bibliography
ER  -