Arnol'd, V I. Ed.
Dynamical Systems VI Singularity Theory I - Berlin Springer Verlag 1993 - 245 - Encyclopaedia of mathematical sciences ; 00006 .
3540505830
Dynamical Systems
51(02) EMS
Dynamical Systems VI Singularity Theory I - Berlin Springer Verlag 1993 - 245 - Encyclopaedia of mathematical sciences ; 00006 .
3540505830
Dynamical Systems
51(02) EMS