Kurniawan, TA. (31 maj 2006). ”Comparisons of low-cost adsorbents for treating wastewaters laden with heavy metals.”. Sci Total Environ "366" (2-3): ss. 409-26. doi:10.1016/j.scitotenv.2005.10.001. PMID 16300818.
Mohan, D. (31 maj 2007). ”Arsenic removal from water/wastewater using adsorbents--A critical review.”. J Hazard Mater "142" (1-2): ss. 1-53. doi:10.1016/j.jhazmat.2007.01.006. PMID 17324507.
Babel, S. (31 maj 2003). ”Low-cost adsorbents for heavy metals uptake from contaminated water: a review”. J Hazard Mater "97" (1-3): ss. 219-43. doi:10.1016/S0304-3894(02)00263-7. PMID 12573840.
Kurniawan, TA. (31 maj 2006). ”Comparisons of low-cost adsorbents for treating wastewaters laden with heavy metals.”. Sci Total Environ "366" (2-3): ss. 409-26. doi:10.1016/j.scitotenv.2005.10.001. PMID 16300818.
Mohan, D. (31 maj 2007). ”Arsenic removal from water/wastewater using adsorbents--A critical review.”. J Hazard Mater "142" (1-2): ss. 1-53. doi:10.1016/j.jhazmat.2007.01.006. PMID 17324507.
Babel, S. (31 maj 2003). ”Low-cost adsorbents for heavy metals uptake from contaminated water: a review”. J Hazard Mater "97" (1-3): ss. 219-43. doi:10.1016/S0304-3894(02)00263-7. PMID 12573840.