Saverio Perugini Kate McDevitt Ryan Richardson Manuel A. Pérez-Quiñones Rao Shen Naren Ramakrishnan Christopher Williams Edward A. Fox Enhancing usability in CITIDEL: multimodal, multilingual, and interactive visualization interfaces. 315-324 2004 conf/jcdl/2004 JCDL http://doi.acm.org/10.1145/996350.996424 db/conf/jcdl/jcdl2004.html#PeruginiMRPSRWF04