Khokerashvili, Z. and Tsanava, D. 2022. Propagation of carbon monoxide in road tunnels in case of fire by considering the critical velocity, backlayering and gradient factor : Print version was published: Book of Abstract, The International Scientific and Technical Conference: "Problems of Engineering Sciences " Yerevan University of International Relations named after A. Shirakatsi Yerevan - Republic of Armenia, May 20-22, 2022. Georgian Scientists. 4, 3 (May 2022), 63–65. DOI:https://doi.org/10.52340/gs.2022.04.03.07.