S.-Y. Niu, Y.-Q. Qin, and B. Han, “Electrochemical DNA Biosensor Improved by Imidazo[4,5-f]1,10-phenanthroline Iron(III) as an Indicator based on Pt-nanoparticles and Carbon Nanotubes Modified Electrode”, ajc, vol. 25, no. 8, pp. 4375–4379, Mar. 2013.