Noviks, Gotfrīds. “UPCYCLING OF TECHNOGENIC MINERAL WASTE – CHALLENGES AND SOLUTIONS”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2021): 183–190. Accessed May 3, 2024. https://journals.ru.lv/index.php/ETR/article/view/6586.