Almonacid-Jiménez, Leidy Yaneth, et al. “Evaluation of the Enzymatic Hydrolysis of Wet White Assisted With Ultrasound to Obtain Hydrolyzed Collagen”. Revista Facultad De Ingeniería, vol. 28, no. 52, July 2019, pp. 59-75, doi:10.19053/01211129.v28.n52.2019.9654.