@article{article85ea6a7a,
title   = {Analysis of the color alteration and radiopacity promoted by bismuth oxide in calcium silicate cement},
author = {Marciano, Marina Angélica and Estrela, Carlos and Mondelli, Rafael Francisco Lia and Ordinola-Zapata, Ronald and Duarte, Marco Antonio Hungaro},
year = {2013},
doi = {10.1590/S1806-83242013000400005},
journal   = {Brazilian Oral Research}
}