Local reflexional and rotational symmetry in the plane. (English) Zbl 0736.58010
Singularity theory and its applications. Pt. I: Geometric aspects of singularities, Proc. Symp., Warwick/UK 1988-89, Lect. Notes Math. 1462, 154-171 (1991).
Reviewer: B.V.Loginov (Tashkent)