@inproceedings{43065,
  author       = {{Khaluf, Lial and Gerth, Christian and Engels, Gregor}},
  pages        = {{521 -- 535}},
  publisher    = {{Springer Verlag}},
  title        = {{{Pattern-Based Modeling  and Formalizing of Business Process Quality Constraints}}},
  year         = {{2011}},
}