Levdansky V. A., Korol’kova I. V., Levdanskiy A. V., Kuznetsov B. N. ISOLATION AND STUDY OF PROANTHOCYANIDINS FROM BARK OF PINE PÍNUS SYLVÉSTRIS L. // Chemistry of plant raw material, 2020, № 4. P. 227-233 DOI: 10.14258/jcprm.2020047749. URL: https://journal.asu.ru/cw/article/view/7749.