@ARTICLE {7638, author={Q. Ferreira and P. Gomes and P. A. R. Ribeiro and N. C. J. Jones and S.V. Hoffmann and and O. O. Oliveira and M. R. Raposo}, doi={10.1021/la304036h}, journal={Langmuir}, title={Determination of Degree of Ionization of Poly(allylamine hydrochloride) (PAH) and Poly[1-[4-(3-carboxy‑4 hydroxyphenylazo)benzene sulfonamido]-1,2-ethanediyl, sodium salt] (PAZO) in Layer-by-Layer Films using Vacuum Photoabsorption Spectroscopy}, year={2013}, month={January}, volume={29}, number={1}, pages={448-455}, ISSN={1520-5827} }