On certain regular graphs of girth 5. O'Keefe, M.; Wong, P.K. — 1984 International Journal of Mathematics and Mathematical Sciences
Collineations of Subiaco and Cherowitzo hyperovals. O'Keefe, Christine M.; Thas, J.A. — 1996 Bulletin of the Belgian Mathematical Society - Simon Stevin
A unified construction of finite geometries associated with q -clans in characteristic 2. Cherowitzo, William E.; O'Keefe, Christine M.; Penttila, Tim — 2003 Advances in Geometry