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Color-families are denseE. Welzl · 1982
Stabbing line segmentsH. Edelsbrunner; H. A. Maurer; F. P. Preparata; A. L. Rosenberg; E. Welzl; D. Wood · BIT Numerical Mathematics · 1982
The Discrete 2-Center ProblemAgarwal, P. K.; Sharir, M.; Welzl, E. · Discrete and Computational Geometry · 1998
A Subexponential Bound for Linear ProgrammingMatousek, M. Sharir, E. Welzl, J. · Algorithmica · 1996
Cutting dense point sets in halfH. Edelsbrunner; P. Valtr; E. Welzl · Discrete and Computational Geometry · 1997
A subexponential bound for linear programmingJ. Matoušek, M. Sharir and E. Welzl · Algorithmica · 1996
Using string languages to describe picture languagesH.A. Maurer; G. Rozenberg; E. Welzl · 1982