This was expanded into his dissertation a few years later: http://www.ccs.neu.edu/home/dherman/research/papers/dissertation.pdf http://www.ccs.neu.edu/home/dhe

This was expanded into his dissertation a few years later: http://www.ccs.neu.edu/home/dherman/research/papers/dissertation.pdf http://www.ccs.neu.edu/home/dherman/research/papers/disserta...