@inproceedings{ER-BR-2013-ValencaA,
	author        = "George Valença and Carina Frota Alves",
	booktitle     = "{Proceedings of Requirements Engineering@Brazil}",
	ee            = "http://ceur-ws.org/Vol-1005/erbr2013_submission_17.pdf",
	publisher     = "{CEUR-WS.org}",
	series        = "{CEUR Workshop Proceedings}",
	title         = "{Um Modelo para Negociação de Requisitos em Ecossistemas de Software}",
	volume        = 1005,
	year          = 2013,
}