Pinto, L. F., B. E. Goi, C. C. Schmitt, and M. G. Neumann. “Photodegradation of Polystyrene Films Containing UV-Visible Sensitizers”. Journal of Research Updates in Polymer Science, vol. 2, no. 1, Mar. 2013, pp. 39-47, doi:10.6000/1929-5995.2013.02.01.5.