Reimann, K. A., O'Gorman, M. R. G., Spritzler, J., Wilkening, C. L., Sabath, D. E., Helm, K., & Campbell, D. E. (2000). Multisite Comparison of CD4 and CD8 T-Lymphocyte Counting by Single- versus Multiple-Platform Methodologies: Evaluation of Beckman Coulter Flow-Count Fluorospheres and the tetraONE System. Clin Diagn Lab Immunol.

Reimann, Keith A., Maurice R. G. O'Gorman, John Spritzler, Cynthia L. Wilkening, Daniel E. Sabath, Karen Helm, och Donald E. Campbell. "Multisite Comparison of CD4 and CD8 T-Lymphocyte Counting By Single- Versus Multiple-Platform Methodologies: Evaluation of Beckman Coulter Flow-Count Fluorospheres and the TetraONE System." Clin Diagn Lab Immunol 2000.

Reimann, Keith A., et al. "Multisite Comparison of CD4 and CD8 T-Lymphocyte Counting By Single- Versus Multiple-Platform Methodologies: Evaluation of Beckman Coulter Flow-Count Fluorospheres and the TetraONE System." Clin Diagn Lab Immunol 2000.