@Inbook{Baldan&al1999,
  author = {P. Baldan and A. Corradini and H. Ehrig and {M. L\"owe} and U. Montanari and F. Rossi},
  title  = {Handbook of Graph Grammars and Graph Transformation},

  year   = {1999},
  number = {},
  url    = {},

  const  = {\ text}
}
@Inbook{Baldan&al1999,
  author = {P. Baldan and A. Corradini and H. Ehrig and {M. L\"owe} and U. Montanari and F. Rossi},
  title  = {Handbook of Graph Grammars and Graph Transformation},

  year   = {1999},
  number = {},
  url    = {},

  const  = {\ text}
}
@Article{Corradini&al1996,
  author = {Andrea Corradini and Ugo Montanari and F. Rossi},
  title  = {Graph processes},
  journal = {Fundamenta Informaticae},
  year   = {1996},
  number = {3 and 4},
  url    = {},

  const  = {\ text}
}