00624naa#a2200193#i#450# EN\\bibl\38695 20240803181222.6 1609-3178 20200714b2020####ek#y0engy0150####ca RU Responding to the Challenges of Time: Distance Learning in the Field of Non-Destructive Rail Testing Journal article Saint-Petersburg LLC SVEN 2020 1 с. Journal article local Maksimova Ekaterina Alekseevna Markov Anatoliy Arkadievich Molotkov Sergey L. Karelin Mihail Viktorovich naukaru.ru