@article{articlec95be023,
title   = {Vibrational characterization of poly(1-methylpyrrole-co-squaric acid) and poly(1-dodecylpyrrole-co-squaric acid) by enhanced Raman spectroscopy},
author = {Sant'Ana, Antonio Carlos and Siqueira, Leonardo José Amaral de and Santos, Paulo Sérgio and Temperini, Márcia Laudelina Arruda},
year = {2006},
doi = {10.1002/jrs.1544},
journal   = {Journal of Raman Spectroscopy}
}