Circular Avoiding-Sequences with Prescribed Sum, Discrete Applied Math., 43 (1993), 27-36, with D. Clark

Enumeration of Maximal Codes, Congressus Numerantium, 102 (1994), 139-145, with N. J. Finizio

A Collatz Type Difference Equation, Congressus Numerantium, 111 (1995), 129-135, with D. Clark

A Criterion For Cyclic Whist Tournaments with the Three Person Property, Utilitas Mathematica 52 (1997), 129-140, with N. J. Finizio.

Transversals of Cyclic Latin Squares, Congressus Numerantium (to appear), with D. Clark.