James E. Blackwood Patricia M. Elliott Robert E. Stobaugh Charles E. Watson The Chemical Abstracts Service Chemical Registry System. III. Stereochemistry. 3-8 1977 17 Journal of Chemical Information and Computer Sciences 1 http://pubs.acs.org/cgi-bin/archive.cgi/jcisd8/1977/17/i01/f-pdf/f_ci60009a003.pdf db/journals/jcisd/jcisd17.html#BlackwoodESW77