1. Ovals, unitals and codes;Andriamanalimanana,1979
2. The binary code arising from a 2-design with a nice collection of ovals;Assmus;IEEE, IT,1983
3. Some unitals on 28 points and their embeddings in projective planes of order 9;Brouwer,1981
4. Finite linear spaces with flag-transitive groups J. Comb. Theory;Buekenhout;Ser. A,1988
5. Finite Geometries;Dembowski,1968