My old tutor at Reading Uni did this in the 1990s. Might be worth checking out his work: http://www.personal.rdg.ac.uk/~stsgrimb/publications.htm http://www.pe

My old tutor at Reading Uni did this in the 1990s. Might be worth checking out his work: http://www.personal.rdg.ac.uk/~stsgrimb/publications.htm http://www.personal.rdg.ac.uk/~stsgrimb/publications.htm