TY JOUR TI REDUCING RISK FOR FIREFIGHTERS DURING THEIR ACTIVITY ON THE BASE OF MULTICHANNEL RECORDING SYSTEMS KW multichannel recording system KW opto-electronic monitoring KW operative headquarters JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Minkin, D.Y. AU Boeva, A.A. AU Yulianovskiy, A.A. PY 2015 IS 2015 PB Saint-Petersburg University of State Fire Service of Emercom of Russia