1. Bennett, M. K. andG. Birkhoff.Convexity Lattices. Alg. Univ.20 (1985), 1?26.
2. Birkhoff, G. andM. K. Bennett.The Convexity Lattice of a Poset.Order 2 (1985), 223?42.
3. Bennett, M. K. and G.Birkhoff.A Peano Axiom for Convexity Lattices. Calcutta Math. Society Diamond jubilee Commemorative Volume (1983), 33?43.
4. Birkhoff, G. and M. K.Bennett.Hilbert's Grundlagen der Geometrie. To appear in Rend. Cir. Math. Palermo.
5. Bennett, M. K. Lattices of Convex Sets. Trans. AMS234 (1977), 277?88.