@article{article724b0092,
title   = {Photodynamic therapy of skin cancer: controlled drug delivery of 5-ALA and its esters},
author = {Lopez, Renata Fonseca Viana and Lange, Norbert and Guy, Richard and Bentley, Maria Vitória Lopes Badra},
year = {2004},
doi = {10.1016/j.addr.2003.09.002},
journal   = {Advanced Drug Delivery Reviews}
}