Arnold, Varchenko, Gusein-Zade: Singularities of Differentiable Maps.
Vol. 1: The classification of critical points caustics and wave fronts.
Birkh"auser, Boston 1985
J. Boehm, M.S. Marais, A. Steenpass: The Classification of Real Singularities Using Singular.
Part III: Unimodal Singularities of Corank 2, https://arxiv.org/abs/1512.09028
Greuel, Lossen, Shustin: Introduction to singularities and deformations.
Springer, Berlin 2007
M.S. Marais, A. Steenpass: The Classification of Real Singularities Using SINGULAR. Part I:
Splitting Lemma and Simple Singularities, J. Symb. Comput. 68 (2015), 61-71
M.S. Marais, A. Steenpass: The Classification of Real Singularities Using SINGULAR. Part II:
The Structure of the Equivalence Classes of the Unimodal Singularities,
J. Symb. Comput. 74 (2016), 346-366
Acknowledgements: This research was supported by
the Staff Exchange Bursary Programme of the University of Pretoria, DFG SPP 1489, and
DFG TRR 195. The financial assistance of the National Research Foundation (NRF),
South Africa, towards this research is hereby acknowledged. Opinions expressed
and conclusions arrived at are those of the author and are not necessarily to be
attributed to the National Research Foundation, South Africa.