[2] P. Erdos L. Gerencsér, A. Maté:
Problems of graph theory concerning optimal design. Combinatorial Theory and its Applications. (P. Erdos, A. Rényi and Vera T. Sos, eds.), North Holland, Amsterdam, 1970; MR 48, 170.
MR 0321803
[3] P. Erdōs:
Some unsolved problems in graph theory and combinatorial analysis. Combinatorial Mathematics and its Applications (D. J. A. Welsh, ed.), Academic Press, London, 1971; MR 43, 3125.
MR 0277392
[4] P. Erdōs L. Lovasz A. Simmons, E. G. Straus:
Dissection graphs of planar point sets. A Survey of Combinatorial Theory (J. Srivastava et al., eds.). North Holland Publishing Co., Amsterdam, 1973.
MR 0363986
[6] T. Gallai:
On directed paths and circuits. Theory of Graphs (P. Erdos and G. Katona, eds.), Akadémiai Kiadó, Budapest, 1968; MR 38, 2054.
MR 0233733 |
Zbl 0159.54403
[7] A. Ghouila-Houri:
Characterisation des graphes non orientés dont on peut orienter les arêtes de manière à obtenir le graphe d'une relation d'order. C.R. Acad. Sci. Paris 254 (1962), 1370-1371; MR 30, 2495.
MR 0172275
[8] P. С Gillmore, A. J. Hoffman:
A characterization of comparability graphs and of interval graphs. Canad. J. Math. 16 (1964), 539-548; MR 31, 87.
DOI 10.4153/CJM-1964-055-5 |
MR 0175811
[9] С E. Haff U. S. R. Murty, R. C. Wilton:
A note on directed graphs realizable as p.o. sets. Canad. Math. Bull. 13 (1970), 371-374; MR 42, 4444.
DOI 10.4153/CMB-1970-070-6 |
MR 0269549
[12] Frank Harary, Robert Z. Norman, Dorwin Cartwright:
Structural Models: An introduction to the theory of directed graphs. New York, Wiley, 1965; MR 32, 2345.
MR 0184874
[13] F. Harary, E. Palmer:
On the number of orientations of a given graph. Bull. Acad. Polon. Sci. Sér. Sci. Math. Astronom. Phys. 14 (1966), 125-128; MR 33, 2562.
MR 0194352 |
Zbl 0135.42105
[14] F. Harary, E. M. Palmer:
Graphical Enumeration. Academic Press, New York, 1974.
MR 0357214
[15] Frank Harary, Edgar Palmer, Cedric Smith:
Which graphs have only self-converse orientations?. Canad. Math. Bull. 10 (1967), 425-429; MR 35, 2791.
DOI 10.4153/CMB-1967-040-0 |
MR 0211916
[16] P. W. Kasteleyn:
Graph theory and crystal physics. Graph Theory and Theoretical Physics (Frank Harary, ed.), Academic Press, New York, 1967; MR 40, 6903.
MR 0253689 |
Zbl 0205.28402
[19] K. M. Mosesjan:
A minimal graph that is not strongly basable. (Russian), Akad. Nauk Armjan. SSR Dokl. 54 (1972), 8-12; MR 46, 1637.
MR 0302493
[22] С St. J. A. Nash-Williams: Well-balanced orientations of finite graphs and unobtrusive odd-vertex-pairings. Recent Progress in Combinatorics (W. T. Tutte, ed.), Academic Press, New York, 1968; MR 40, 7146.
[23] Oystein Ore:
Theory of Graphs, American Mathematical Society. Providence, R.I., 1962; MR 27, 740.
MR 0150753
[24] H. E. Rohbins:
A theorem on graphs with an application to a problem of traffic control. Amer. Math. Monthly, 46 (1939), 281-283.
DOI 10.2307/2303897 |
MR 1524589
[25] E. S. Wölk:
The comparability graph of a tree. Proc. Amer. Math. Soc, 13 (1965), 789-795; MR 30, 2493, 2494.
MR 0172273
[26] Bohdan Zelinka:
Introducing an orientation into a given non-directed graph. Mat.-Fyz. Časopis Sloven. Akad. Vied, 16 (1966), 66-71; MR 34, 4167.
MR 0204325