Gor’kovoj, V. F. Hadwiger’s hypothesis for \(m=5\). (Russian) Zbl 0684.05026 Mathematical methods of optimization and control in systems, Collect. sci. Works, Kalinin 1985, 17-22 (1985). MSC: 05C35 PDFBibTeX XML
Toft, Bjarne Some problems and results related to subgraphs of colour critical graphs. (English) Zbl 0559.05029 Graphen in Forschung und Unterricht, Festschr. K. Wagner, 178-186 (1985). Reviewer: I.Tomescu MSC: 05C15 05C35 05C65 05-02 PDFBibTeX XML