Zhu, Guo-Quan, et al. “Modification of Polypeptide-Graft-poly(ethylene Glycol) Film by Blending With Poly(butyl Acrylate-Co-Methyl Methacrylate)”. Asian Journal of Chemistry, vol. 26, no. 1, Dec. 2013, pp. 10-12, doi:10.14233/ajchem.2014.15207.