TY  - BOOK
AU  - Urabe Minoru
TI  - Nonlinear autonomous oscillations
T2  - Mathematics in science and engineering: A series of monographs and textbooks; 34
U1  - B33:3, K7 
PY  - 1967///
KW  -  Differential equation
KW  -  Integral equation
KW  - Mathematics
ER  -