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Foskett, D.J.: Classification for a general index language: a review of recent research by the Classification Research Group (1970)
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Austin, D.: ¬The CRG research into a freely faceted scheme (1976)
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- Source
- Classification in the 1970s. Rev. ed
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Vickery, B.C.: Classificatory principles in natural language indexing systems (1976)
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- Source
- Classification in the 1970s: a second look. Rev. ed. Ed.: A. Maltby
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Wilson, T.D.: ¬The work of the British Classification Research Group (1972)
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