00648naa#a2200193#i#450# EN\\bibl\9451 20241129141235.5 2308-8877 20151105b2015####ek#y0engy0150####ca RUS RU Modeling problems in econometrics on the basis of a system of interrelated equations Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 3 с. Journal article local Kolchanov S. Kuznetsova L. Mkhitaryan A. zh-szf.ru