The crux of the retrieval problem is that selecting documents to read grows ever more difficult, and new techniques are continually needed.
B.C. Vickery (1970) Techniques of information retrieval. p. 5.
The crux of the retrieval problem is that selecting documents to read grows ever more difficult, and new techniques are continually needed.
B.C. Vickery (1970) Techniques of information retrieval. p. 5.