@misc{miscd960c154,
title   = {Colorimetric Analysis of the Influence of Calcium in Tooth Bleaching},
author = {Cruz, A. F. S and Sobral, Maria Ângela Pita and Alexandrino, L. D and Gomes, Y and Silva, C. M and Alves, E. B},
year = {2012},
journal   = {Journal of Dental Research}
}