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In memory of Martin Farber
Translated from Kibernetika i Sistemnyi Analiz, No. 6, pp. 47–57, November–December, 1993.
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Dragan, F.F. Domination in quadrangle-free helly graphs. Cybern Syst Anal 29, 822–829 (1993). https://doi.org/10.1007/BF01122734
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DOI: https://doi.org/10.1007/BF01122734