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Edmundson, H.P.; Wyllis, R.E.: Automatic abstracting and indexing : survey and recommendations (1961)
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- Communications of the Association for Computing Machinery. 4(1961) no.5, S.226-234
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Edmundson, H.P.; Wyllis, R.E.: Problems in automatic abstracting (1964)
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- Communications of the Association for Computing Machinery. 7(1964) no.1, S.259-263