1. EN 16407-1:2014. Non-destructive testing – radiographic inspection of corrosion and deposits in pipes by X- and gamma rays – Part 1: Tangential radiographic inspection.
2. EN 16407-2:2014. Non-destructive testing – radiographic inspection of corrosion and deposits in pipes by X- and gamma rays – Part 2: Double wall radiographic inspection.
3. R. Halmshaw R. Honeycombe P. Hancock. Non-destructive testing; 1991
4. Halmshaw R. Industrial radiography; 1991.
5. Berger M, Hubbell J, Chang J, Seltzer S, Coursey J, Sukumar R, et al. XCOM: photon cross sections database; 1998