Conference paper (2014) - J Lage (author), SM almeida (author), MA Reis (author), PC Chave (author), MC Freitas (author), T Ribeiro (author), S Garcia (author), JP Faria (author), BG Fernández (author), H.T. Wolterbeek (author)

Journal article (2004) - T Casimiro (author), F Montilla (author), S Garcia (author), T Aviles (author), S. Raeissi (author), A. Shariati-sarabi (author), C.J. Peters (author), M Nunes da Ponte (author), A Aguiar-Ricardo (author)