1. Well Logging for Earth Scientists;Ellis,1987
2. NaI detector nonlinearity for PGNAA applications;Gardner;Applied Radiation and Isotopes,1999
3. Gozani, Tsahi, 1999. Personal communication
4. Heath, R.L., 1964. Scintillation spectrometry gamma-ray spectrum catalogue. IDO-16880-1, AEC Research and Development Report, Physics, TID-4500
5. Prompt gamma rays from thermal neutron capture;Lone;Atomic Data and Nuclear Tables,1981