Tim Paek Bo Thiesson Yun-Cheng Ju Bongshin Lee Search Vox: leveraging multimodal refinement and partial knowledge for mobile voice search. 141-150 2008 UIST http://doi.acm.org/10.1145/1449715.1449738 conf/uist/2008 db/conf/uist/uist2008.html#PaekTJL08