TY JOUR TI FEATURES OF THE ESTIMATION OF ENTERPRISE RISK OF THE MARKET OF SEA TRANSPORTATIONS OF CARGOES KW volatility KW oil KW liquefied gas KW container transport KW bulk cargo KW general cargo JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Abramov, A.V. AU Silenko, V.M. PY 2012 IS 2012 PB Saint-Petersburg University of State Fire Service of Emercom of Russia