Phan, N., and A. Nguyen. “BISMUTH FILM AND MERCURY FILM ON GOLD MICRO-ELECTRODES FOR TRACE LEAD ANALYSIS”. VNUHCM Journal of Science and Technology Development, Vol. 12, no. 10, May 2009, pp. 5-13, doi:https://doi.org/10.32508/stdj.v12i10.2293.