secondary degradationAnalysis of operational factors that can lead to fuel failure in WWER units 12/29/2014 2014 - #04 Physics and technology of nuclear reactors Evdokimov I.A. Likhanskij V.V. Sorokin A.A. Zborovskij V.G. Kozhakin A.N. Chernetskij M.G. Shestakov Yu.M. Semenovykh A.S.