“There is as yet no unified theory of retrieval systems, and a good deal of retrieval practice is still an empirical art, unsullied by theory.”

—  Brian Campbell Vickery

Preface (1961) p. vi; Partly cited by Stephen E. Robertson (2011) &quot; On retrieval system theory http://www.iskouk.org/conf2011/papers/robertson.pdf&quot;. <br class="br">On Retrieval System Theory (1961)

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Brian Campbell Vickery84
British information theorist 1918–2009

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Disputed, Misattributed

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Misattributed

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