Altamirano, C., J. Berrios, M. Vergara, and S. Becerra. “Advances in Improving Mammalian Cells Metabolism for Recombinant Protein Production”. Electronic Journal of Biotechnology, vol. 16, no. 3, May 2013, https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v16n3-2.