TeongJoo Ong John J. Leggett Hugh D. Wilson Stephan L. Hatch Monique D. Reed Interactive Information Visualization in the Digital Flora of Texas. 188-198 2002 conf/jcdl/2002vidl Visual Interfaces to Digital Libraries http://dx.doi.org/10.1007/3-540-36222-3_14 db/conf/jcdl/vidl2002.html#OngLWHR02