TY  - BOOK
AU  - Iooss Gerard
AU  -  Joseph Daniel D.
TI  - Elementary stability and bifurcation theory
SN  - 0387970681
U1  - "B33, N0" 
PY  - 1990///
CY  - N.
PB  - York Springer-Verlag      
KW  - Economics
ER  -