S. H. Betts and N. H. Wright, NORM management and disposal -Options, risks, issues and decision making. Proceedings of the SPE Health, safety and environment in oil and gas exploration and production conference, 2004.
DOI : 10.2118/86661-ms

D. Californian, Department of Health Services) A study of NORM associated with oil and gas production operations in California, 1996.

C. Cazala, G. Loriot, N. Pires, T. Doursot, F. Matouk et al., NORM industrial plants with potential radiological impact on workers and local population: First lessons from the review of available risk assessment studies in France, Radioprotection, vol.44, issue.5, pp.233-236, 2009.
DOI : 10.1051/radiopro/20095046

P. R. Gray, NORM Contamination in the Petroleum Industry, Journal of Petroleum Technology, vol.45, issue.01, pp.12-16, 1993.
DOI : 10.2118/22880-PA

A. S. Paschoa, NORM from the monazite cycle and from the oil and gas industry: Problems and tentative solutions, Radioprotection, vol.44, issue.5, pp.957-962, 2009.
DOI : 10.1051/radiopro/20095171

G. Reed, B. Holland, and A. Mcarthur, Evaluating the real risks of radioactive scale in oil and gas production Proceedings of the SPE Health, safety and environment in oil and gas exploration and production conference, pp.549-558, 1991.

. Sniffer, Identification and assessment of alternative disposal options for radioactive oilfield wastes. Summary guidance. Project UKRSR07, 2005.

T. F. Sh, B. A. Sizov, R. N. Diyashev, V. I. Zaitsev, G. P. Antonov et al., Influence of radon and decay products on fiel equipment service personnel. Proceedings of the SPE Health, safety and environment in oil and gas exploration and production conference, pp.845-854, 1996.