S.  Radhakrishnan and Adhikari, A., ?Role of dopant ions in electrocatalytic oxidation of methanol using conducting polypyrrole electrodes?, Journal of Power Sources, vol. 155, no. 2, pp. 157-160, 2006.

A.  Adhikari and Radhakrishnan, S., ?Dopant induced effect on electrocatalytic reduction of nitrobenzene using conducting polypyrrole thin film electrodes?, Journal of Applied Polymer Science, vol. 120, no. 2, pp. 719-724, 2011.