1. The geometry of two-weight codes;Calderbank;Bull. London Math. Soc.,1986
2. Maximal subgroups of G2(2n);Cooperstein;J. Algebra,1981
3. Weights of linear codes and strongly regular normed spaces;Delsarte;Discrete Math.,1972
4. Codes from generalized hexagons;De Wispelaere;Des. Codes Cryptogr.,2005
5. A. De Wispelaere, H. Van Maldeghem, Some new two-character sets in PG(5,q2) and a distance-2 ovoid in the generalized hexagon H(4), Discrete Math., in press