M.F. Lynch, J.M. Harrison and W.G. Town (with contributions from J.E. Ash), Computer Handling of Chemical Structure Information (MacDonald, London; and, American Elsevier, New York, 1971).
2.
C. Oppenheim, A microcomputer program for the statistical anlysis of patent databases, World Patent Information5 (4) (1983) 209-212.
3.
Since the paper was read at the conference in Austria, the following book has been published. It updates many of the concepts outlined in Lynch et al. Ash, Chubb, Ward, Welford and Willett. Communication Storage and Retrieval of Chemical Information (Ellis Horwood, Chichester , 1985).
4.
Derwent publications Ltd. have recently released PATSTAT, a statistical analysis software package for use with their WPI, WPIL online files. PATSTAT was developed and refined out of the ideas presented in this paper.
