Mahalingam, P. et al. 2014. Characterization of Magnetic Metal Encapsulated in Multi-Walled Carbon Nanotubes Synthesized from Methyl Ester of Pongamia pinnata Oil and Its Application for Removal of Arsenic Ions from Aqueous Solution. Asian Journal of Chemistry. 26, 14 (Jul. 2014), 4167–4171. DOI:https://doi.org/10.14233/ajchem.2014.16053.