Kim, Suh-Ryung; Roberts, Fred S. Competition graphs of semiorders and the conditions \(C(p)\) and \(C^ *(p)\). (English) Zbl 1072.05532 Ars Comb. 63, 161-173 (2002). MSC: 05C20 05C75 PDFBibTeX XMLCite \textit{S.-R. Kim} and \textit{F. S. Roberts}, Ars Comb. 63, 161--173 (2002; Zbl 1072.05532)
Roberts, Fred S.; Sheng, Li Phylogeny numbers for graphs with two triangles. (English) Zbl 0953.05027 Discrete Appl. Math. 103, No. 1-3, 191-207 (2000). Reviewer: Péter L.Erdős (Budapest) MSC: 05C20 PDFBibTeX XMLCite \textit{F. S. Roberts} and \textit{L. Sheng}, Discrete Appl. Math. 103, No. 1--3, 191--207 (2000; Zbl 0953.05027) Full Text: DOI
Roberts, F. S. Competition graphs and phylogeny graphs. (English) Zbl 0924.05032 Lovász, L. (ed.) et al., Graph theory and combinatorial biology. Based on talks and discussions of the international colloquium on combinatorics and graph theory, Balatonlelle, Hungary, July 1996. Budapest: János Bolyai Mathematical Society. Bolyai Soc. Math. Stud. 7, 333-362 (1999). Reviewer: D.P.Brown (Carbondale) MSC: 05C20 05C75 05C45 PDFBibTeX XMLCite \textit{F. S. Roberts}, Bolyai Soc. Math. Stud. 7, 333--362 (1999; Zbl 0924.05032)
Roberts, Fred S.; Sheng, Li Phylogeny numbers. (English) Zbl 0907.05024 Discrete Appl. Math. 87, No. 1-3, 213-228 (1998). Reviewer: W.G.Brown (Montreal) MSC: 05C20 05C35 92D40 05C85 91F20 PDFBibTeX XMLCite \textit{F. S. Roberts} and \textit{L. Sheng}, Discrete Appl. Math. 87, No. 1--3, 213--228 (1998; Zbl 0907.05024) Full Text: DOI Link
Roberts, Fred S.; Sheng, Li Phylogeny graphs of arbitrary digraphs. (English) Zbl 0887.05048 Mirkin, Boris (ed.) et al., Mathematical hierarchies and biology. DIMACS workshop, November 13-15, 1996. Providence, RI: AMS, American Mathematical Society. DIMACS, Ser. Discrete Math. Theor. Comput. Sci. 37, 233-237 (1997). MSC: 05C90 05C20 92D40 92D15 PDFBibTeX XMLCite \textit{F. S. Roberts} and \textit{L. Sheng}, DIMACS, Ser. Discrete Math. Theor. Comput. Sci. 37, 233--237 (1997; Zbl 0887.05048)
Kim, Suh-Ryung; Roberts, Fred S. Competition numbers of graphs with a small number of triangles. (English) Zbl 0889.05057 Discrete Appl. Math. 78, No. 1-3, 153-162 (1997). Reviewer: Zhang Wenpeng (Xi’an) MSC: 05C35 05C20 PDFBibTeX XMLCite \textit{S.-R. Kim} and \textit{F. S. Roberts}, Discrete Appl. Math. 78, No. 1--3, 153--162 (1997; Zbl 0889.05057) Full Text: DOI Link
Barthélemy, Jean-Pierre; Hudry, Olivier; Isaak, Garth; Roberts, Fred S.; Tesman, Barry The reversing number of a digraph. (English) Zbl 0826.05032 Discrete Appl. Math. 60, No. 1-3, 39-76 (1995). Reviewer: D.P.Brown (Carbondale) MSC: 05C20 05C35 PDFBibTeX XMLCite \textit{J.-P. Barthélemy} et al., Discrete Appl. Math. 60, No. 1--3, 39--76 (1995; Zbl 0826.05032) Full Text: DOI
Kim, Suh-Ryung; McKee, Terry A.; McMorris, F. R.; Roberts, Fred S. \(p\)-competition graphs. (English) Zbl 0824.05027 Linear Algebra Appl. 217, 167-178 (1995). Reviewer: M.Škoviera (Bratislava) MSC: 05C20 PDFBibTeX XMLCite \textit{S.-R. Kim} et al., Linear Algebra Appl. 217, 167--178 (1995; Zbl 0824.05027) Full Text: DOI
Kim, Suh-ryung; McKee, Terry A.; McMorris, F. R.; Roberts, Fred S. \(p\)-competition numbers. (English) Zbl 0785.05044 Discrete Appl. Math. 46, No. 1, 87-92 (1993). Reviewer: J.W.Moon (Edmonton) MSC: 05C20 05C99 PDFBibTeX XMLCite \textit{S.-r. Kim} et al., Discrete Appl. Math. 46, No. 1, 87--92 (1993; Zbl 0785.05044) Full Text: DOI
Kim, Suh-Ryung; Roberts, Fred S.; Seager, Suzanne On \(1\,0\,1\)-clear \((0,1)\) matrices and the double competition number of bipartite graphs. (English) Zbl 1230.05069 J. Comb. Inf. Syst. Sci. 17, No. 3-4, 302-315 (1992). MSC: 05B20 05C20 PDFBibTeX XMLCite \textit{S.-R. Kim} et al., J. Comb. Inf. Syst. Sci. 17, No. 3--4, 302--315 (1992; Zbl 1230.05069)
Kim, Suh-Ryung; Roberts, Fred S. On Opsut’s conjecture about the competition number. (English) Zbl 0697.05031 Combinatorics, graph theory, and computing, Proc. 20th Southeast Conf., Boca Raton/FL (USA) 1989, Congr. Numerantium 71, 173-176 (1990). Reviewer: J.W.Moon MSC: 05C20 PDFBibTeX XML
Roberts, Fred S.; Xu, Yonghua On the optimal strongly connected orientations of city street graphs. II: Two East-West avenues or North-South streets. (English) Zbl 0708.05026 Networks 19, No. 2, 221-233 (1989). Reviewer: Wai-Kai Chen MSC: 05C20 05C40 PDFBibTeX XMLCite \textit{F. S. Roberts} and \textit{Y. Xu}, Networks 19, No. 2, 221--233 (1989; Zbl 0708.05026) Full Text: DOI
Jones, Kathryn F.; Lundgren, J. Richard; Roberts, Fred S.; Seager, Suzanne Some remarks on the double competition number of a graph. (English) Zbl 0652.05022 Combinatorics, graph theory, and computing, Proc. 18th Southeast. Conf., Boca Raton/Fl. 1987, Congr. Numerantium 60, 17-24 (1987). MSC: 05C20 05C50 PDFBibTeX XML
Roberts, Fred S. Structure and stability in weighted digraph models. (English) Zbl 0428.93046 Ann. N.Y. Acad. Sci. 321, 64-77 (1979). MSC: 93C55 93C05 93A15 94C15 05C20 93Dxx 15A18 PDFBibTeX XMLCite \textit{F. S. Roberts}, Ann. N. Y. Acad. Sci. 321, 64--77 (1979; Zbl 0428.93046) Full Text: DOI