Radiation embrittlement of reactor pressure vessel materials of Rivne NPP unit 1 due to re-irradiation after recovery annealing - M. H. Holiak; H. P. Hrynchenko; V. M. Revka; O. V. Tryhubenko; Yu. V. Chaikovskyi; L. I. Chyrko; O. V. Shkapiak (Nuclear physics and atomic energy, 2019)