TY JOUR TI Algorithm of designing of permanent mathematical models for the purposes of quality control of knowledge of students of higher educational institutions KW quality of students´ knowledge KW identification algorithm KW external selection criteria KW group data handling method. JO Forestry Engineering Journal AU Cherkasov, O.. AU Belokurov, V.P. AU Starodubtsev, V.. AU Farafonov, A.. PY 2015 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov