“Derivation of CaO-SiO2-Al2O3 System Slag Viscosity Equation by GP”. Journal of Mining and Metallurgy, Section B: Metallurgy, vol. 57, no. 3, Nov. 2021, pp. 309-17, https://test.aseestant.ceon.rs/index.php/jmm/article/view/23237.