Archana Prasad Indrani Medhi Kentaro Toyama Ravin Balakrishnan Exploring the feasibility of video mail for illiterate users. 103-110 2008 AVI http://doi.acm.org/10.1145/1385569.1385588 conf/avi/2008 db/conf/avi/avi2008.html#PrasadMTB08