Sharma, H. et al. 2020. Biosorptive Removal of Cu(II), Cd(II) and Pb(II) Ions from Synthetic Wastewater Using Low Cost Biosorbent (Pyras pashia): Thermodynamic and Equilibrium Studies. Asian Journal of Chemistry. 32, 4 (Feb. 2020), 727–732. DOI:https://doi.org/10.14233/ajchem.2020.22372.