Preechaworapun, A., Lertsuwunpisal, P., & Tangkuaram, T. (2016). Differential pulse anodic stripping voltammetry for Lead(II) Cadmium(II) and Zinc(II) analysison a low cost pencil carbon electrode. Interdisciplinary Research Review, 11(4), 1–7. https://doi.org/10.14456/jtir.2016.9