@inproceedings{inproceedingse3bd61e0,
title   = {Optimization of oxybutynin and N-desethyloxybutynin preconcentration by liquid phase microextraction using a factorial design},
author = {Fonseca, Patrícia da and Freitas, Luís Alexandre Pedro de and Bonato, Pierina Sueli},
year = {2007},
publisher = {ABCF},
booktitle   = {International Congress of Pharmaceutical Sciences (CIFARP)}
}