TY  - BOOK
AU  - Friedrichs, K.O.
ED  - Berg, P.
ED  - Hirsch, W.
ED  - Treuenfels, P.
TI  - Lectures on advanced ordinary differential equations
T2  - Notes on mathematics & its applications
U1  - 515.35 
PY  - 1965///
CY  - New York
PB  - Gordon and Breach Science Publishers
ER  -