On centers and central lines of triangles in the elliptic plane - Manfred Evers We determine barycentric coordinates of triangle centers in the...
Symbolic substitution has a geometric meaning - Manfred Evers By comparing two different metrics in the affine plane, it is shown that symbolic...
Generalizing orthocorrespondence - Manfred Evers B. Gibert [Forum Geom., 3 (2003) 21--27] investigates a transformation P→ P┴ of the plane of a...
