Ifeanyi, A., A. A. Paul, and J. J. Dung. “Mathematical Modeling of Cassiterite Using Certain High Field Strength Elements (HFSE) With Respect to Thermodynamics Principle”. The International Journal of Science & Technoledge, vol. 9, no. 10, Oct. 2021, doi:10.24940/theijst/2021/v9/i10/ST2108-006.