Ernst P. Mücke,
Isaac Saias,
and Binhai Zhu
Computational Geometry Theory & Applications 12(1–2):63–83, Feb 1999
Proc. 12th Symp. Computational Geometry, ACM, May 1996, pp. 274–283
http://www.c3.lanl.gov/~isaac/publications/96-geometry.ps
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