1. CRYS-X: Distributed by the Royal Australian Chemical Institute Division of Medicinal & Agricultural Chemistry, Professor G.A.R. Johnston, Department of Pharmacology, University of Sydney, NSW, Australia 2006.
2. ALCHEMY: Distributed by Tripos Associates Inc., 1699 South Hanley Road, Suite 303, St. Louis, MO 63144, USA. Reviewed by G.R. Newkome, J. Am. Chem. Soc, 110 (1988) 325.
3. CAMSEQ/M and CAMSEQ/PC: Distributed by Weintraub Software Design Associates Inc., P.O. Box 42577, Cincinnati, OH 45242, USA.
4. MGP (Molecular Graphics Package): Distributed by the American Chemical Society, Distribution Office, Department 212, 1155 Sixteenth Street NW, Washington, DC 20036, USA.
5. MOLGRAF: Distributed by Elsevier-BIOSOFT, 68 Hills Road, Cambridge, CB2 ILA, UK.