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Translated from Sibirskii Matematicheskii Zhurnal, Vol. 11, No. 3, pp. 648–667, May–June, 1970.
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Shevrin, L.N., Filippov, N.D. To the undimmed memory of petr Grigor'evich Kontorovich: Partially ordered sets and their comparability graphs. Sib Math J 11, 497–509 (1970). https://doi.org/10.1007/BF00967091
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DOI: https://doi.org/10.1007/BF00967091