@article{articleec9a5453,
title   = {Chitosan: effect of a new chelating agent on the microhardness of root dentin},
author = {Pimenta, Josilaine Amaral and Zaparolli, Danilo and Pécora, Jesus Djalma and Cruz Filho, Antônio Miranda da},
year = {2012},
doi = {10.1590/S0103-64402012000300005},
journal   = {Brazilian Dental Journal}
}