PENG, J. “LIQUIDUS TEMPERATURES OF Na3AlF6 -AlF3-CaF2-KF-LiF-Al2O3 MELTS”. Journal of Mining and Metallurgy, Section B: Metallurgy, Vol. 50, no. 1, Apr. 2014, pp. 23-26, https://aseestant.ceon.rs/index.php/jmm/article/view/3984.