@article{article093410be,
title   = {Electronic working length determination in primary teeth by propex and digital signal processing},
author = {Nelson Filho, Paulo and Lucisano, Marcela Pacífico and Leonardo, Mário Roberto and Silva, Raquel Assed Bezerra da and Silva, Lea Assed Bezerra da},
year = {2010},
doi = {10.1111/j.1747-4477.2009.00185.x},
journal   = {Australian Endodontic Journal}
}