A characterization of (alpha, s+1)-geometries, 1 < alpha < s+1, satisfying the axiom of Pasch
A characterization of the complement of a hyperbolic quadric in PG (3, q), for q odd
Classification of (1, s)-geometries fully embedded in PG(n, s), for s not equivalent to 2
Full embeddings of (alpha,beta)-geometries in projective spaces, part II
Full embeddings of (alpha, beta)-geometries in projective spaces.