@incollection{compref175,
   author = {Johnson,J},
   year = {1986},
   title = {A Theory of Stars in complex Systems},
   booktitle = {Complexity Language and Life: Mathematical Approaches},
   editor = {Casti,JL and Karlquist,A},
   publisher = {Springer-Verlag},
   address = {Berlin},
   pages = {21-61}
}

@incollection{compref69,
   author = {Casti,JL},
   year = {1986},
   title = {On System Complexity: Identification, Measurement and Management},
   booktitle = {Complexity Language and Life: Mathematical Approaches},
   editor = {Casti,J and Karlquist,A},
   publisher = {Springer},
   address = {Berlin},
   pages = {146-173}
}

@incollection{compref51,
   author = {Berlinski,D},
   year = {1986},
   title = {The Language of Life},
   booktitle = {Complexity Language and Life: Mathematical Approaches},
   editor = {Casti,JL and Karlquist,A},
   publisher = {Springer-Verlag},
   address = {Berlin},
   pages = {231-267}
}