Shrestha, B., Homagai, P. L., Pokhrel, M. R. and Ghimire, K. N. (2013) “Exhausted Tea Leaves – a low cost bioadsorbent for the removal of Lead (II) and Zinc (II) ions from their aqueous solution”, Journal of Nepal Chemical Society, 30, pp. 123–129. doi: 10.3126/jncs.v30i0.9383.