W. G. Hoyle On the number of categories for classification. [Citation Graph (0, 0)][DBLP] Information Storage and Retrieval, 1969, v:5, n:1, pp:1-6 [Journal]
Donald J. Polton Conversion of the IUPAC notation into a form for computer processing. [Citation Graph (0, 0)][DBLP] Information Storage and Retrieval, 1969, v:5, n:1, pp:7-25 [Journal]
David M. Jackson A note on a set of functions for information retrieval. [Citation Graph (0, 0)][DBLP] Information Storage and Retrieval, 1969, v:5, n:1, pp:27-41 [Journal]
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