TY JOUR TI Cobb-douglas function when assessing the development of agriculture of kursk area KW production function KW the Cobb-Douglas function KW linear regression model KW an econometric model JO Actual directions of scientific researches of the XXI century: theory and practice AU Zyukin, D.. AU Zhilin, V.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov