@misc{misca6199f78, title = {Quantification of the efficiency for photo-bleached pigments using cellulose matrixes as substrate and digitalized gray scale}, author = {Florez, F. L. E. and Lins, E. C. C. Correia and Lizarelli, Rosane de Fátima Zanirato and Bagnato, Vanderlei Salvador}, year = {2006}, publisher = {The International Society for Optical Engineering - SPIE}, booktitle = {Lasers in Dentistry} }