CATECHOLASE ACTIVITY OF A COPPER(II) COMPLEX WITH THE 2-(5-(1,2,4)TRIAZOLE-1-ILMETHYL-1H-(1,2,4)-TRIAZOLE-3-IL)-PYRIDYL: DOI: Https: doi.Org 10.17721 1728-2209.2020.1(57).5. Вісник: Хімія 2020, 57 (1), 19-22.