doi dblp
Interactive reference retrieval in large files
M. Carville | L. D. Higgins | Francis Jack Smith

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Some levels of interaction in information science
E. H. Brenner

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The use of hierarchic clustering in information retrieval
N. Jardine | Cornelis Joost van Rijsbergen

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Retrieval efficiency from titles and the cost of indexing
Bjorn V. Tell

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The Czechoslovak computer information system ASTI
Miroslav Fendrych | Jiri Fogl