TY JOUR TI Pro-row of creation of b-distribution on selection of random variables (on the example of management of evacuation) KW random variables KW probabilistic distributions KW evacuation JO Problems of risk management in the technosphere AU Tarantsev, A.A. AU Smirnov, A.S. PY 2014 IS 2014 PB Saint-Petersburg University of State Fire Service of Emercom of Russia