Abu Bakar, Norlaili, et al. “The Potential of Ferrocenium As a Sensing Reagent for Determination of 2,4,6-Trichlorophenol in Water Samples”. Journal of Science and Mathematics Letters, vol. 3, June 2015, pp. 16-23, https://ejournal.upsi.edu.my/index.php/JSML/article/view/345.