[13] Broeksma C.P., “Evaluating the Applicability of an Alkaline Amino Acid Leaching Process for Base and Precious Metal Leaching from Printed Circuit Board Waste”, Doctoral Dissertation, Stellenbosch: Stellenbosch University (2018).
[14] Aghababaei Sh., “Examining the Effective Parameters on Copper Leaching from Printed Circuit Boards Waste by the Design Experiments Method”, Master Thesis in Mining Engineering, Lorestan University, 74 (2017).
[15] Raeisi Z., “The Gold Recovery from Electronic Waste Using Solvent Extraction Method”, Master Thesis in Mining Engineering, Zanjan University, 83 (2019).
[16] Kiani V., "Evaluating the Synergistic Effect of Amino Acids on the Cyanation Process of Poyazarkan Agh Dareh Gold Processing Plant", Master Thesis in Mining Engineering, Lorestan University, 93 (2019).