Valtr, Pavel; Lippner, Gábor; Károlyi, Gyula Empty convex polygons in almost convex sets. (English) Zbl 1157.52306 Period. Math. Hung. 55, No. 2, 121-127 (2007). MSC: 52C10 PDFBibTeX XMLCite \textit{P. Valtr} et al., Period. Math. Hung. 55, No. 2, 121--127 (2007; Zbl 1157.52306)
Bisztriczky, Tibor; Hosono, Kiyoshi; Károlyi, Gyula; Urabe, Masatsugu Constructions from empty polygons. (English) Zbl 1068.52023 Period. Math. Hung. 49, No. 2, 1-8 (2004). MSC: 52C10 PDFBibTeX XMLCite \textit{T. Bisztriczky} et al., Period. Math. Hung. 49, No. 2, 1--8 (2004; Zbl 1068.52023) Full Text: DOI
Károlyi, Gyula; Tóth, Géza An Erdős-Szekeres type problem in the plane. (English) Zbl 0968.52010 Period. Math. Hung. 39, No. 1-3, 153-159 (1999). Reviewer: Peter Brass (Berlin) MSC: 52C10 05C55 PDFBibTeX XMLCite \textit{G. Károlyi} and \textit{G. Tóth}, Period. Math. Hung. 39, No. 1--3, 153--159 (1999; Zbl 0968.52010) Full Text: DOI
Károlyi, Gy. On point covers of parallel rectangles. (English) Zbl 0759.05027 Period. Math. Hung. 23, No. 2, 105-107 (1991). Reviewer: R.L.Hemminger (Nashville) MSC: 05B40 05C65 05C70 PDFBibTeX XMLCite \textit{Gy. Károlyi}, Period. Math. Hung. 23, No. 2, 105--107 (1991; Zbl 0759.05027) Full Text: DOI