- Third order right focal boundary value problems on a time scale, with J. Henderson, A. Lanz,W.K.C. Yin, InternationaL Journal of Difference Equations and Appications December 2005
- Second order right focal boundary value problems on a t'ime scale, with J. Henderson, A. Lanz,W.K.C. Yin, Communications on Applied Nonlinear Analysis, Vol. 11, No. 4, 57-62, October 2004
- Transform methods and image compression, with Darrel Hankerson. The Linux Journal, January 1999, Issue 57.
- The Unit Circle, Roots of Unity, and the Fo'urier Transform, with Darrel Hankerson, proceedings of the Technology Strateg'ies Work shops in Undergraduate Mathematics Instruction, Colorado State University, June 1995
- Osc'illation of first and second order delay difference equations, with Darrel Hankerson, Journal of Dynamic Systems and Applications, Vol. 4, No. 2, 251-262, June 1995