Geodesic
Which Graphs have only Self-Converse Orientations?
Canadian mathematical bulletin, Tome 10 (1967) no. 3, pp. 425-429

Voir la notice de l'article provenant de la source Cambridge University Press

An orientation of a graph G is an assignment of a unique direction to each line of G. The result is called an oriented graph. Two orientations of a graph are regarded as equivalent if the resulting oriented graphs are isomorphic as directed graphs. For example, the graph C3 consisting of a cycle of length 3 (a triangle) shown in Figure 1(a), has exactly two orientations D1 and D2; see Figure 1(b) and (c). 
Harary, Frank; Palmer, Edgar; Smith, Cedric. Which Graphs have only Self-Converse Orientations?. Canadian mathematical bulletin, Tome 10 (1967) no. 3, pp. 425-429. doi: 10.4153/CMB-1967-040-0
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[1] 1. Harary, F., A seminar on graph theory. New York, Holt Rinehart and Winston, 1967, pp. 1-41. Google Scholar

[2] 2. Harary, F., Norman, R. and Cartwright, D., Structural models: an introduction to the theory of directed graphs. New York, Wiley, 1965. Google Scholar

[3] 3. Harary, F. and Palmer, E., On the number of orientations of a given graph. Bull. Acad. Polon. Sci. Ser. Sci. Math. Astronom. Phys. 14(1966), pp. 125-128. Google Scholar

[4] 4. Harary, F. and Palmer, E., Enumeration of self-converse digraphs. Mathematika 13 (1966), pp. 151-157. Google Scholar

[5] 5. Kónig, D., Theorie der endlichen und unendlichen Graphen. Leipzig, 1936; reprinted New York, Chelsea, 1950. Google Scholar

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