Forum Geometricorum, 4 (2004) 85--95.
Abstract: Suppose
that ABC is a triangle in the Euclidean plane and I its incenter. Then the
Euler lines of ABC, IBC, ICA, and IAB concur at a point S, the Schiffler
center of ABC. In the main theorem of this paper we give a projective generalization
of this result and in the final part, we construct Schiffler-like points
and a lot of other related centers. Other results in connection with
the Schiffler center can be found in the articles [1] and [3].