@article{compref688,
   author = {Sambrook,T and Whiten,A},
   year = {1997},
   title = {On the Nature of Complexity in Cognitive and Behavioural Science},
   journal = {Theory and Psychology},
   volume = {7},
   pages = {191-213}
}

@misc{compref692,
   author = {van der Bosch,APM},
   year = {1997},
   title = {Simplicity and Prediction},
   howpublished = {Available electronically at <a href="http://tcw2.ppsw.rug.nl/~vdbosch/simple.ps">http://tcw2.ppsw.rug.nl/~vdbosch/simple.ps</a>}
}

@book{compref30,
   author = {Badii,R and Politi,A},
   year = {1997},
   title = {Complexity: Hierarchical Structures and Scaling in Physics},
   publisher = {Cambridge University Press},
   address = {Cambridge}
}