Parthasarathy, V., et al. “Functionalization of Low Density Polyethylene With Ethyl Crotonate and Ethyl Salicylate in the Presence of Free Radical Initiator: FTIR-RI Kinetics Study”. Asian Journal of Chemistry, vol. 25, no. 7, Feb. 2013, pp. 3755-61, doi:10.14233/ajchem.2013.13748.