The complexity of constructing gerechte designs.
The construction of orthogonal k-skeins and latin k-cubes.
The disjoint -flower intersection problem for Latin squares.
The existence of Room squares.
The many formulae for the number of Latin rectangles.
The number of orthogonal Latin squares
The spectra of certain classes of room frames: the last cases.
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.
Translations of Symmetric and Complete Nets.
Transversals of rectangular arrays.