TY  - BOOK
AU  - Salle,Joseph La
AU  - Lefschetz,Solomon
TI  - Stability by Liapunov's direct method: with applications 
U1  - 515.35 23
PY  - 1961/// [Reprinted 1963]
CY  - New York, London
PB  - Academic Press
KW  - Stability
KW  - Differntial equations
N1  - Includes bibliography and index
ER  -