1. Hendee WR, Ritenour R. Medical Imaging Physics. St. Louis: Mosby Year Book; 1992.
2. Ouseph PJ. Introduction to Nuclear Radiation Detectors. New York: Plenum Press; 1975.
3. Robinson CV. Geiger-Müller and proportional counters. In: Hine GJ, ed. Instrumentation in Nuclear Medicine. New York: Academic Press, 1967:57–72.
4. Rollo FD, ed. Nuclear Medicine Physics, Instrumentation and Agents. St. Louis: Mosby; 1977.
5. Sorensen JA, Phelps ME. Physics in Nuclear Medicine. 2nd ed. New York: Grune & Stratton; 1987.