Reflective Euclidean hypersurfaces
A modification of the reflection property is given ruling out a gap contained in the author's paper in [Geom. Dedicata 33, No. 3, 325--329 (1990; Zbl 0692.53002) (see also the preceding review [Zbl 0726.53005]).
rotational hypersurfaces of second order
scientific article; zbMATH DE number 4198934