Mukanov, Z., A. Sharafudinov, R. Takhanov, and A. Bekembayev. “Combining Unsupervised Dimension Reduction With Sufficient Dimension Reduction”. Eurasian Mathematical Journal, vol. 17, no. 1, Mar. 2026, pp. 58-76, https://emj.enu.kz/index.php/main/article/view/948.