TY JOUR TI POSSIBILITY OF APPLYING THE GRAPH THEORY FOR SOLVING A NUMBER OF OPTIMIZATION PROBLEMS OF OPERATIONAL ACTIVITIES OF DIVISIONS OF EMERCOM OF RUSSIA KW optimization KW routes of movement KW cycles of gamilton JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Barinova, Y.S. AU Kamenetskaya, N.V. AU Kalinina, E.S. PY 2015 IS 2015 PB Saint-Petersburg University of State Fire Service of Emercom of Russia