@article{10_37236_1516,
     author = {L. Babai and P. J. Cameron},
     title = {Automorphisms and enumeration of switching classes of tournaments},
     journal = {The electronic journal of combinatorics},
     year = {2000},
     volume = {7},
     doi = {10.37236/1516},
     zbl = {0956.05050},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1516/}
}