TY  - BOOK
AU  - Nemytskii,V.V.
AU  - Stepanov,V.V.
TI  - Qualitative theory of differential equations,
AV  - QA371 .N413
U1  - 517.38 
PY  - 1960///
CY  - Princeton, N.J.
PB  - Princeton University Press
KW  - Differential equations
KW  - Dynamics
N1  - Includes bibliography
UR  - http://www.archive.org/details/qualitativetheor00nemy
UR  - http://www.openlibrary.org/books/OL5799304M
ER  -