%0 Journal Article %T Estimation of Toxic Gases’ Density Increment in the Integral Mathematical Model of Initial Fire Stage in Buildings %A Fedorov, Y.I. %A Pavlidis, V.D. %A Urban, V.A. %A Yakovleva, E.V. %K dangerous fire factors, integral fire model, fire initial stage, differential equation, toxic gases’ volume-averaged density %J Safety in Technosphere %D 2020 %N 9 %P 5 %I INFRA-M Academic Publishing LLC.