Ante Graovac Dejan Plavsic Drazen Vikic-Topic Proceedings of the Fourteenth Dubrovnik MATH/CHEM/COMP International Course & Conference. 515-515 2000 40 Journal of Chemical Information and Computer Sciences 3 http://dx.doi.org/10.1021/ci0000373 db/journals/jcisd/jcisd40.html#GraovacPV00