Guram Khitiri, Raul Kokilashvili, Tinatin Gabunia, and Madona Tsurtsumia. “OBTAINING OF HYDRO-INSULATION MATERIALS, PENETRANTS AND OTHER DEFICIENT LOW- TONNAGE PRODUCTS FROM PETROLEUM”. Science Review, no. 6(33), Sept. 2020, doi:10.31435/rsglobal_sr/30092020/7188.