00583naa#a2200181#i#450# EN\\bibl\18868 20241202093331.1 1999-8775 20171003b2017####ek#y0engy0150####ca RU METHODOLOGICAL APPROACH TO SOCIAL SYSTEM INVESTIGATION Journal article Bryansk Bryansk State Technical University 2017 2 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 U Tszyayuy Shen Yuykhun naukaru.ru