TY JOUR TI Assessment of using marginal analysis when forecasting the income of the company KW marginal analysis KW prediction KW income KW expenses KW sales volume. JO Actual directions of scientific researches of the XXI century: theory and practice AU Sibiryatkin, S.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov