D. Rodríguez-Serrano, F. M. Lara-Viveros, S. G. Sánchez-Herrera, and G. J. Aguado-Rodríguez, “Using digital images to evaluate the colorimetric response of lisianthus plants to nutrient solutions in hydroponic systems”, Terra Latinoam, vol. 38, no. 3, pp. 499–506, Jul. 2020.