@article{article04b1609e,
title   = {Molecular weight effect on the photoinduced birefringence and surface relief gratings formation of a methacrylate azopolymer},
author = {Carvalho, L. L. and Borges, T, F. C. and Cardoso, M. R. and Mendonça, Cleber Renato and Balogh, Débora Terezia},
year = {2006},
doi = {10.1016/j.eurpolymj.2006.04.015},
journal   = {European Polymer Journal}
}