TY JOUR TI OPTIMISATION PROBLEMS OF APLICATION OF FIRE-RESCUE UNITS FOR GAS-TRANSPORT SYSTEMS KW affected by the emergency of a regional scale KW posing mathematical models KW affected by the emergency of a regional scale JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Chernykh, A.K. AU Budanov, D.S. PY 2016 IS 2016 PB Saint-Petersburg University of State Fire Service of Emercom of Russia