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1. Which Line-Graphs Are Perfectly Orderable?
:CHVÁTAL, V. Which Line-Graphs Are Perfectly Orderable? 1. ed. Bonn : Inst. für Ökonometrie und Operations Research, 1989. 4 s. Report, No.89562 - OR. [Počet ex. : 1, z toho voľných 1, prezenčne 0]