Porchelvi, K.N., A. Sudarvizhi, and K. P. 2013. “Amperometric Detection of Nitrite Using Chitosan Protected Copper Phthalocyanine Sulfonate Functionalized Multiwalled Carbon Nanotube Modified GCE in Water Samples”. Asian Journal of Chemistry 25 (20):83-86. https://asianpubs.org/index.php/ajchem/article/view/25_Supplementary%20Issue_22.