@article{01498627,
title = {Automorphisms and enumeration of switching classes of tournaments.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {7},
year = {2000},
zbl = {0956.05050},
language = {en},
url = {http://dml.mathdoc.fr/item/01498627}
}
Babai, L.; Cameron, P.J. Automorphisms and enumeration of switching classes of tournaments.. The Electronic Journal of Combinatorics [electronic only], Tome 7 (2000) . http://gdmltest.u-ga.fr/item/01498627/