Givi Papava, Marina Gurgenishvili, Ia Chitrekashvili, Eter Gavashelidze, and Nora Dokhturishvili. “SYNTHESIS OF NOVOLAC TYPE PHENOL FORMALDEHYDE OLIGOMERS”. World Science, no. 7(59), Aug. 2020, doi:10.31435/rsglobal_ws/30092020/7207.