00620naa#a2200181#i#450# EN\\bibl\117129 20260320151030.5 2782-4586 20260204b2026####ek#y0engy0150####ca RU Investments in the activities of engineering enterprises in the Samara Region Journal article Moscow ITBO University 2026 8 с. Journal article local Экономические науки в целом. Политическая экономия. 330 Umarova A. A. Stefanova Natalia Alexandrovna jomeam.ru