@phdthesis{1997-blume ,note={URL: {\tt http://ttic.uchicago.edu/~blume/papers/thesis.ps.gz}. Note: Technical Report TR--551--97} ,title={{Hierarchical modularity and intermodule optimization}} ,booktitle={{Hierarchical modularity and intermodule optimization}} ,author={Matthias Blume} ,publisher={Princeton University} ,year={1997} }