Tham khảo Đồ_thị_có

Tham khảo Đồ_thị_có_hướng

Bang-Jensen, Jørgen; Gutin, Gregory (2000), Digraphs: Theory, Algorithms and Applications, Springer, ISBN 1-85233-268-9
(the corrected 1st edition of 2007 is now freely available on the authors' site; the 2nd edition appeared in 2009 ISBN 1-84800-997-6).
Bondy, John Adrian; Murty, U. S. R. (1976), Graph Theory with Applications, North-Holland, ISBN 0-444-19451-7, Bản gốc lưu trữ ngày 13 tháng 4 năm 2010 .
Diestel, Reinhard (2005), Graph Theory (ấn bản 3), Springer, ISBN 3-540-26182-6 (the electronic 3rd edition is freely available on author's site).
Harary, Frank; Norman, Robert Z.; Cartwright, Dorwin (1965), Structural Models: An Introduction to the Theory of Directed Graphs, New York: Wiley .
Number of directed graphs (or directed graphs) with n nodes from On-Line Encyclopedia of Integer Sequences

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