@article{articled4639844,
title   = {Combination of ultrasonic extraction and stripping analysis: an effective and reliable way for the determination of 'CU' and 'PB' in lubricating oils},
author = {Munõz, Rodrigo Alejandro Abarza and Oliveira, Pedro Vitoriano de and Angnes, Lúcio},
year = {2006},
doi = {10.1016/j.talanta.2005.06.016},
journal   = {Talanta}
}