Stefan Langerman
and William Steiger
Proc. 11th Symp. Discrete Algorithms, ACM
and SIAM, Jan 2000, pp. 54–59
Tech. report 99-57, Rutgers Univ., Ctr. for Discrete Math. & Theor. Comp. Sci., 1999
Proc. 4th CGC Worksh. Computational Geometry, Oct 1999
http://www.cs.jhu.edu/~cgc/abstracts99/stefan.ps
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