%0 Journal Article %T THE ISSUE OF SECURITY CROSSINGS ON THE ICE %A Grashchenko, E.A. %A Ivanov, A.N. %K ice passage, ice thickness, freezing, structure of ice, bearing capacity of ice cover %J NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) %D 2016 %N 2016 %P 5 %I Saint-Petersburg University of State Fire Service of Emercom of Russia