?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Omezzine&rft.aufirst=Aya&rft.date=30+November+2017&rft.title=Automated+and+dynamic+multi-level+negotiation+framework+applied+to+an+efficient+cloud+provisioning