Ryzhova, Olga, and Olga Gurzhyi. “Obtaining Dyed Decorative Enamels for Products Made of Gold, Silver and Copper”. Eastern-European Journal of Enterprise Technologies 4, no. 5(82) (August 30, 2016): 45–51. Accessed July 27, 2024. https://journals.uran.ua/eejet/article/view/74852.