1. Di Modica, G., Regalbuto, V., Tomarchio, O., Vita, L.: Enabling re-negotiations of SLA by extending the WS-agreement specification. In: IEEE International Conference on Services Computing (SCC 2007), pp. 248–251. IEEE (2007)
2. Di Modica, G., Tomarchio, O., Vita, L.: Dynamic SLAS management in service oriented environments. J. Syst. Softw. 82(5), 759–771 (2009)
3. Frankova, G., Malfatti, D., Aiello, M.: Semantics and extensions of WS-agreement. J. Soft. 1(1), 23–31 (2006)
4. Hani, A.F.M., Paputungan, I.V., Hassan, M.F.: Renegotiation in service level agreement management for a cloud-based system. ACM Comput. Surv. (CSUR) 47(3), 51 (2015)
5. Parkin, M., Hasselmeyer, P., Koller, B..: An SLA re-negotiation protocol. In: Proceedings of the 2nd Non Functional Properties and Service Level Agreements in Service Oriented Computing Workshop (NFPSLA-SOC08), CEUR Workshop Proceedings, vol. 411. Citeseer. ISSN 1613-0073 (2008)