Charles Thas,  On the Schiffler point,

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]. 

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