Tactical decompositions of designs.
The (16,6,2) designs.
The chromatic index of cyclic Steiner 2-designs.
The construction of resolvable block-systems
The design of the century
The existence of FGDRP's.
The four known biplanes with k=11.
The nonexistence of regular near octagons with parameters .
The simple 7-(33, 8, 10)-designs with automorphism group P-Gamma-L(2, 23).
The spectrum of idempotent varieties of algebras with binary operators based on two variable identities. (Short Communication).
The spectrum of idempotent varieties of algebras with binary operators based on two variable identities.
Translational hulls and block designs.
Translations and Axial Collineations of Affine Designs.
Two open problems on balanced block designs