1. J.J. LaBrecque, W.C. Parker and P.A. Rosales, Radiochem. Radioanal. Letters, 49: 261 (1981).
2. J.J. LaBrecque and W.C. Parker, Adv. X-ray Anal., 26: 337 (1983).
3. J.J. LaBrecque, P.A. Rosales and W.C. Parker, J. Radioanal. Chem. 78: 87 (1983).
4. D. Hale, J.C. Russ and D.E. Leyden, Microbeam Analysis, 473 (1982).
5. K. Borowski, I.L. Priess, J.J. LaBrecque and C. Pawley, Computer Enhanced Spectroscopy, 1: 99 (1983).