1. S. W. Golomb, T. Etzion, and H. Taylor, Polygonal path constructions for Tuscan-K squares, Ars Combin., in press.
2. A characteristic property of quadratic residues;Kelly,1954
3. Latin Squares and Their Applications;Dénes,1974
4. Tuscan squares—A new family of combinatorial designs;Golomb;Ars Combin.,1985
5. Constructions and properties of Costas arrays;Golomb,1984