00626naa#a2200205#i#450# EN\\bibl\36832 20241115170401.5 1609-3178 20200408b2020####ek#y0engy0150####ca RU Use of Radiography Techniques to Analyze the Quality of Beryllium Parts Welding Journal article Saint-Petersburg LLC SVEN 2020 4 с. Journal article local Eliseev Daniil Pavlovich Leonova Tatyana G. Fedorovich Sergey N. Filippov Aleksandr Yu. Scherbak Aleksandr G. naukaru.ru