Silvia Gomes, Ricardo Falbo, and Crediné Menezes. 2005.
 A Model for IT Service Level Agreement. In <em>Proceedings of the 4th Brazilian Symposium on Software Quality</em>, June 06, 2005, Porto Alegre-RS, Brasil. SBC, Porto Alegre, Brasil, 191-205. DOI: <a href="https://doi.org/10.5753/sbqs.2005.16163">https://doi.org/10.5753/sbqs.2005.16163</a>.