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survey or faceted brwosing techniques
A Survey about different search engines
Applett that implements Topic maps for digital library exmploration
search strateigy proposed by (Meadow and Cochrane, 1981) Meadow, C.T. & Cochrane, P. (1981). Basics of online searching. New York: John Wiley & Sons.
Data visulization library
in the Workshop on Computer Interaction and Information Retrieval, HCIR 2008, (2008)
D-Lib Magazine (October 2002)