Comparing semiliterate and illiterate users' ability to transition from audio+text to text-only interaction.

Leah Findlater Ravin Balakrishnan Kentaro Toyama Comparing semiliterate and illiterate users' ability to transition from audio+text to text-only interaction. 1751-1760 2009 CHI http://doi.acm.org/10.1145/1518701.1518971 conf/chi/2009 db/conf/chi/chi2009.html#FindlaterBT09