00738naa#a2200169#i#450# EN\\bibl\4505 20241023052610.3 20201219b2020####ek#y0engy0150####ca RU On conditional "safety grades" of power units of NPPs of the Russian Federation Conference article/thesis Nizhny Novgorod ANO "Scientific and Research Center for Information in Physics and Technique" 2020 11 с. Conference article/thesis local Общие вопросы математических и естественных наук. 50 Математика. 51 Ядерная физика. 29.15 grnti Arzhaev Alexey Ivanovich srcipt.editorum.ru