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Source

Journal of the Association for Computing Machinery. 7(1960) no.3, S.216-244

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Content

Doctoral dissertation, University of Pennsylvania, 1961. Vgl..: http://www.garfield.library.upenn.edu/essays/v7p441y1984.pdf. Auch in: Essays of an information scientist. Vol. 7. Philadelphia, PA: ISI Press, 1985. S.441-513.

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Date

22. 9.2021 16:02:03