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Матиясевич, Ю. В. (1974), "Одна схема доказательств в дискретной математике" [A certain scheme for proofs in discrete mathematics], Исследования по конструктивной математике и математической логике [Studies in constructive mathematics and mathematical logic. Part VI. Dedicated to A. A. Markov on the occasion of his 70th birthday], Zapiski Naučnyh Seminarov Leningradskogo Otdelenija Matematičeskogo Instituta im. V. A. Steklova Akademii Nauk SSSR (LOMI) (in Russian), vol. 40, pp. 94–100, MR0363823
Gutin, G. (1994), "Minimizing and maximizing the diameter in orientations of graphs", Graphs and Combinatorics, 10 (3): 225–230, doi:10.1007/BF02986669, MR1304376, S2CID2453716