@Inproceedings{EPTCS2.5,
  author    = {Bistarelli, Stefano and Santini, Francesco},
  year      = {2009},
  title     = {Soft Constraints for Quality Aspects in Service Oriented Architectures},
  editor    = {ter Beek, Maurice},
  booktitle = {{\rm Proceedings Fourth European Young Researchers Workshop on}
               Service Oriented Computing,
               {\rm Pisa, Italy, 17-19th June 2009}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {2},
  publisher = {Open Publishing Association},
  pages     = {51-65},
  doi       = {10.4204/EPTCS.2.5},
}