TY  - BOOK
AU  - Puu Tonu
TI  - Nonlinear economic dynamics
T2  - Lecture notes in econoimcs and mathematical systems
U1  - X:(B7:3), N1;N7 
PY  - 1997///
CY  - New York
PB  - Springer Verlag U S A     
KW  - Operations Rersearch Economics
ER  -