Lanchava, O. et al. 2021. A SYSTEM OF TRANSFORMABLE CROSSPIECES TO BLOCK HARMFUL COMBUSTION PRODUCT PROPAGATION IN TUNNELS: This work was supported by Shota Rustaveli National Science Foundation (SRNSF) [Grant numberAR–19-1936]. Georgian Scientists. 1, 1 (May 2021). DOI:https://doi.org/10.52340/gs.02.09.233.