in Actas da 4a Conferencia Iberica de Sistemas e Tecnologias de Informacao, CISTI 2009
Pages: 473-476
Conference
4A Conferencia Iberica de Sistemas e Tecnologias de Informacao, Cisti 2009 - 4Th Iberian Conference on Information Systems and Technologies, Cisti 2009, Date: 17 June 2009 through 20 June 2009