@inproceedings{Del091413,
   author = "E. Del Val and N. Criado and M. Rebollo and E. Argente",
   title = "{N}ormative {T}ime-{B}ounded {S}ervice {L}ogic",
   booktitle = "7th European Workshop on Multi-Agent Systems (EUMAS'09)",
   year = "2009",
   pages = "1--13"
}