@misc{ponce_membranes_for_2004, 
author={Ponce, M.L.,Prado, L.A.S.de A.,Silva, V.,Pereira Nunes, S.},
title={Membranes for direct methanol fuel cell based on modified heteropolyacids},
year={2004},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Ponce, M.; Prado, L.; Silva, V.; Pereira Nunes, S.: Membranes for direct methanol fuel cell based on modified heteropolyacids. Desalination. 2004. vol. 162, 383-391.}}