Eric Danneels, The Eppstein Centers and the Kenmotu Points,
Forum Geometricorum, 5 (2005) 173--180.
Abstract: The Kenmotu points of a triangle are triangle centers associated
with squares each with a pair of opposite vertices on two sides of a triangle.
Given a triangle ABC, we prove that the Kenmotu points of the intouch triangle
are the same as the Eppstein centers associated with the Soddy circles of