@misc{BaumgartnerTinelli2004,
  author    = {Peter Baumgartner and Cesare Tinelli},
  title     = {The model evolution calculus},
  institution = {Institut f{\"u}r Informatik},
  series    = {Fachberichte Informatik},
  number    = {2003,1},
  type      = {periodicalpart},
  pages     = {61},
  year        = {2004},
}