Forum Geometricorum, 1 (2001) 43 -- 50; supplement, 50a.
Abstract: A solution is given of Steiner's variation of the classical Malfatti problem in which the triangle is replaced by three circles mutually tangent to each other externally. The two circles tangent to the three given ones, presently known as Soddy's circles, are encountered as well.
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Geometricorum, volume 1.