@article{compref695,
   author = {Crutchfield,JP},
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   journal = {Physica D},
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}

@incollection{compref98,
   author = {Crutchfield,JP},
   year = {1993},
   title = {Observing Complexity and The Complexity of Observation},
   booktitle = {Inside versus Outside},
   editor = {Atmanspacher,H},
   publisher = {Springer},
   address = {Berlin},
   pages = {235-272}
}

@incollection{compref97,
   author = {Crutchfield,JP},
   year = {1992},
   title = {Knowledge and Meaning ... Chaos and Complexity},
   booktitle = {Modeling Complex Phenomena},
   editor = {Lam,L and Naroditsky,V},
   publisher = {Springer},
   address = {Berlin},
   pages = {66-101}
}

@incollection{compref96,
   author = {Crutchfield,JP},
   year = {1991},
   title = {Reconstructing Language Hierarchies},
   booktitle = {Information Dynamics},
   editor = {Atmanspacher,H and Scheingraber,H},
   publisher = {Plenum Press},
   address = {New York},
   pages = {45-60}
}

@article{compref99,
   author = {Crutchfield,JP and Young,K},
   year = {1989},
   title = {Inferring Statistical Complexity},
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   pages = {105}
}