A. Koizhanova, B. Kenzhaliyev, D. Magomedov, M. Yerdenova, A. Bakrayeva, and N. Abdyldayev, “Project of green recycling and disposal of spent copper heaps in a closed ecosystem”, Acta Metall Slovaca, vol. 31, no. 3, pp. 156–162, Sep. 2025.