Singularities of differentiable maps /
V. I. Arnold, S. M. Gusein-Zade, A. N. Varchenko.
- Boston : Birkh auser, 1985-
- v. <1 >
- Monographs in mathematics ; v. 82 .
v. 1. The classification of critical points, caustics and wave fronts.
Translation of: Osobennosti differen t siruemykh otobrazheni i.