TY JOUR TI FORECAST OF NUMBER OF FIRES BASED ON WOLF NUMBERS KW prediction of the number of fires KW Wolf numbers KW parabolic interpolation KW method of least squares JO Problems of risk management in the technosphere AU Pus', V.V. AU Bahmetov, V.E. PY 2013 IS 2013 PB Saint-Petersburg University of State Fire Service of Emercom of Russia