MathSciNet bibliographic data MR2121300 (2005k:52032) 52B55 (68U05) Speckmann, Bettina; Tóth, Csaba D. Allocating vertex $\pi$$\pi$-guards in simple polygons via pseudo-triangulations. Discrete Comput. Geom. 33 (2005), no. 2, 345–364. Article

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