TY JOUR TI APPLICATION ELECTROPHYSICAL METHOD OF EXTINGUISHING AGENT EFFICIENCY BASED ON WATER KW water KW air-foam mechanical KW physico-chemical properties JO Problems of risk management in the technosphere AU Alekseik, E.B. AU Nikitin, N.A. AU Savenkova, A.E. PY 2013 IS 2013 PB Saint-Petersburg University of State Fire Service of Emercom of Russia