1. Andreescu, N. (1968). Incercarlle nedistruetive ale materialelor si pieselor pentru centrale nuclearoelectrice. In Proc. CNIT Colloque 1968, Bucharest.
2. Stroitelstvo atorrmnyh elektrostantsyi,1979
3. Essais non destructifs;Mc Gonnagle,1967
4. Metallographic Standard for Estimating Hydrogen Content of Zircaloy 4 Tubing;Hyatt,1982
5. Nondestructive Examination;ASME,1977