de Juan, D., V. F. Messenguer, and L. J. Lozano. 1999. “A Contribution to the Study of CuSO4∙5H2O Solubility in Aqueous Media”. Revista De Metalurgia 35 (1):47-52. https://doi.org/10.3989/revmetalm.1999.v35.i1.605.