TY - BOOK AU - Arnold,V.I et al ED - Afrajmovich, V.S ED - Il'yashenko, Yu.S ED - Shil'nikov, L.P TI - Bifurcation theory & catastrophe theory T2 - Encyclopaedia of mathematical sciences 5 SN - 9783540653790 U1 - 6.07+12.01 PY - 1999/// CY - Berlin PB - Springer ER -