INTERACTION BETWEEN COPPER(II) OXIDE AND AQUEOUS AMMONIA IN THE PRESENCE OF ETHYLENEDIAMINETETRAACETIC ACID ArticleNevskaya E.Yu., Gorichev I.G., Safronov S.B., Zaitsev B.E., Kutepov A.M., Izotov A.D.Theoretical Foundations of Chemical Engineering. Том 35. 2001. С. 503-509