TY  - BOOK
AU  - Petrovskii,I.G.
TI  - Ordinary differential equations
PY  - 1966///
CY  - Englewood Cliffs, N.J
PB  - Prentice-Hall
KW  - Differential equations
N1  - Translation of: Lektsii po teorii obyknovennykh differentsialnykh uravneii; p. 227
ER  -