Apolônio, Luiz Felipe, et al. “Direct Determination of Malachite Green and Leucomalachite Green in Natural Waters by Exploiting Solid-Phase Sorption and Digital Image”. Orbital: The Electronic Journal of Chemistry, vol. 12, no. 4, Dec. 2020, pp. 193-04, https://periodicos.ufms.br/index.php/orbital/article/view/15716.