Fulek, Radoslav; Pach, János Thrackles: an improved upper bound. (English) Zbl 1407.05162 Discrete Appl. Math. 259, 226-231 (2019). MSC: 05C60 05C62 PDFBibTeX XMLCite \textit{R. Fulek} and \textit{J. Pach}, Discrete Appl. Math. 259, 226--231 (2019; Zbl 1407.05162) Full Text: DOI Link
Fulek, Radoslav; Suk, Andrew On disjoint crossing families in geometric graphs. (English) Zbl 1274.05329 Nešetřil, Jarik (ed.) et al., Extended abstracts of the sixth European conference on combinatorics, graph theory and applications, EuroComb 2011, Budapest, Hungary, August 29 – September 2, 2011. Amsterdam: Elsevier. Electronic Notes in Discrete Mathematics 38, 367-375 (2011). MSC: 05C62 05C35 PDFBibTeX XMLCite \textit{R. Fulek} and \textit{A. Suk}, Electron. Notes Discrete Math. 38, 367--375 (2011; Zbl 1274.05329) Full Text: Link