1. “Method and apparatus for determining the distribution of constituent subpopulations within a population of particles having overlapping sub-populations” (with E.L. Carver and D.C. DeCava), U.S. patent #5,187,673 issued 2/16/1993.

2. “Method for determining the distribution of constituent subpopulations within a population of particles having overlapping subpopulations” (with E.L. Carver and D.C. DeCava), U.S. patent #5,349,538 issued 9/20/1994.