Take a look at this: http://theory.stanford.edu/~aiken/moss/ http://theory.stanford.edu/~aiken/moss/ Specifically: http://theory.stanford.edu/~aiken/publicat

Take a look at this: http://theory.stanford.edu/~aiken/moss/ http://theory.stanford.edu/~aiken/moss/ Specifically: http://theory.stanford.edu/~aiken/publications/papers/sigmod03.pdf http://theory.stanford.edu/~aiken/publications/papers/sigmod...