Silva, Marco Aurélio Toledo da, et al. “Optical Properties of Thin Flms of MEH-PPV Produced by the Spin-Coating Technique at Different Rotational Speeds”. Semina: Ciências Exatas E Tecnológicas, vol. 29, no. 1, July 2008, pp. 15-38, doi:10.5433/1679-0375.2008v29n1p15.