Shyshchak, O.     Phenol-formaldehyde oligomers with unsaturated double bonds [Текст] / O. Shyshchak, G. Strap, Oleg Shyshchak // Third international caucasian symposium on polymers & advanced materials ICSP&AM : abstracts, 1-4 Sept. 2013, Tbilisi, Georgia / Min. of Education and Science of Georgia, Iv. Javakhishvili Tbilisi State Univ. — Tbilisi, Georgia, 2013. — P. 78.