Das, Sandip; Francis, Mathew; Hell, Pavol; Huang, Jing Recognition and characterization of chronological interval digraphs. (English) Zbl 1295.05161 Electron. J. Comb. 20, No. 3, Research Paper P5, 14 p. (2013). MSC: 05C62 05C20 05C75 PDFBibTeX XMLCite \textit{S. Das} et al., Electron. J. Comb. 20, No. 3, Research Paper P5, 14 p. (2013; Zbl 1295.05161) Full Text: Link
Feder, Tomás; Hell, Pavol; Xie, Wing Matrix partitions with finitely many obstructions. (English) Zbl 1158.05326 Electron. J. Comb. 14, No. 1, Research Paper R58, 17 p. (2007). MSC: 05C50 15A99 05C75 PDFBibTeX XMLCite \textit{T. Feder} et al., Electron. J. Comb. 14, No. 1, Research Paper R58, 17 p. (2007; Zbl 1158.05326) Full Text: EuDML EMIS