@article{GDZPPN002194678,
title = {Cofinalities of doubly transitive sets.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {302},
year = {1978},
pages = {7-15},
zbl = {0368.06001},
url = {http://dml.mathdoc.fr/item/GDZPPN002194678}
}
Hickman, J.L. Cofinalities of doubly transitive sets.. Journal für die reine und angewandte Mathematik, Tome 302 (1978) pp. 7-15. http://gdmltest.u-ga.fr/item/GDZPPN002194678/