00615naa#a2200169#i#450# EN\\bibl\28243 20240520063243.1 1609-3178 20190403b2019####ek#y0engy0150####ca RU Method of Calculation of an Exposure when Changing High Voltage on a X-Ray Tube and/or Thickness of the X-Radiography Material Journal article Saint-Petersburg LLC SVEN 2019 2 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 Shilenkov Anatoly A. naukaru.ru