00614naa#a2200181#i#450# EN\\bibl\9461 20241201100108.7 2308-8877 20151105b2015####ek#y0engy0150####ca RUS RU Management companies diversification strategy based economic and mathematical modeling Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 4 с. Journal article local Shatalov M. Mychka S. naukaru.ru