@inproceedings{SEKE-2007-RalhaAM,
	author        = "Célia Ghedini Ralha and Jose Nelson C. Allemand and Alba Cristina Magalhaes Alves de Melo",
	booktitle     = "{Proceedings of the 19th International Conference on Software Engineering and Knowledge Engineering}",
	isbn          = "1-891706-20-9",
	pages         = "724--None",
	publisher     = "{Knowledge Systems Institute Graduate School}",
	title         = "{A Four-layered Semantic Grid Architecture}",
	year          = 2007,
}