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Translated from Kibernetika, No. 3, pp. 134–139, May–June, 1972.
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Sheidvasser, M.A. The optimal ordering of nodes of an oriented tree. Cybern Syst Anal 8, 504–509 (1972). https://doi.org/10.1007/BF01069008
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DOI: https://doi.org/10.1007/BF01069008