@article{10_1017_S0017089500002159,
     author = {Wright, E. M.},
     title = {Asymmetric and symmetric graphs},
     journal = {Glasgow mathematical journal},
     pages = {69--73},
     year = {1974},
     volume = {15},
     number = {1},
     doi = {10.1017/S0017089500002159},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002159/}
}