Atom-centred fragments
Ghose-Crippen atom-centred fragments
Viswanadhan, V.N., Ghose, A.K., Revankar, G.R. & Robins, R.K. (1989). J.Chem.Inf.Comput.Sci., 29, 163-172
Viswanadhan V.N.
et al
. (1993), J. Comput. Chem., 14, 1019-1026