1. NORM waste in the oil and gas industry;Al-Masri;J. Radioanal. Nucl. Chem,2003
2. American Petroleum Institute (API), 1992. Bulletin on management of naturally occurring radioactive materials (NORM) in oil and gas production, API Bulletin E2 (BULE2), First Edition.
3. Management and disposal alternation for norm wastes in oil production and gas plant equipment;Baird;Am. Petroleum Inst,1996
4. Homogeneity testing of spiked reference materials;Biagini;Sci. Total Environ,1995
5. Direct analysis of 210Pb in sediment samples, self-absorption corrections;Cutshall;Nucl. Instrum. Methods,1983