TY  - BOOK
AU  - Guckenheimer John
AU  -  Holmes Philip
TI  - Nonlinear oscillations, dynamical systems and bifurcations of vector fields
T2  - Applied mathematical sciences
U1  - B7:53, M3 
PY  - 1983///
CY  - New York    
PB  -  Springer Verlag       
ER  -