TY JOUR TI Mathematic modeling of computer virus propagation with use of canonical catastrophe of the fold KW mathematical model KW computer virus KW catastrophe theory KW nonlinear system of differential equations JO Actual directions of scientific researches of the XXI century: theory and practice AU Semykina, N.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov