References
- Combinatorics of finite geometries L.M.Batten
- Combinatorial Identities H.W.Gould
- Proceedings of Fuzzy Logic Programming OUCC89 On Fuzzy square Matrices(Fuzzy Linear Algebra) J.B.Kim;C.B.Kim
- Boolean Geometry C.B.Kim;J.B.Kim
- Boolean Geometry(2) C.B.Kim