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Number of items: 3.
2021
Apke, Alexander and Schrader, Rainer ORCID: 0000-0001-6635-0132 (2021). A characterization of interval orders with semiorder dimension two. Discret Appl. Math., 297. S. 142 - 151. AMSTERDAM: ELSEVIER. ISSN 1872-6771
2018
Apke, Alexander (2018). On representing graphs with unit intervals. Thesis Abstract, Universität zu Köln.
2015
Apke, Alexander and Schrader, Rainer (2015). On the non-unit count of interval graphs. Discrete Applied Mathematics, 195. pp. 2-7. Elsevier.