Onderka, Boguslaw Zbigniew, Krzysztof Fitzner, Marek Kopyto, and Witold Przybylo. 2017. “Thermodynamics of Bi2O3-SiO2 System”. Journal of Mining and Metallurgy, Section B: Metallurgy 53 (3): 223. https://asistent.ceon.rs/index.php/jmm/article/view/14204.