Yu, Y., X. Zhou, S. Wu, T. Wei, and L. Yu. “High-Yield Production of the Human Lysozyme by Pichia Pastoris SMD1168 Using Response Surface Methodology and High-Cell-Density Fermentation”. Electronic Journal of Biotechnology, vol. 17, no. 6, Nov. 2014, https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/2014.09.006.