Neil Patel Sheetal K. Agarwal Nitendra Rajput Amit Anil Nanavati Paresh Dave Tapan S. Parikh A comparative study of speech and dialed input voice interfaces in rural India. 51-54 2009 CHI http://doi.acm.org/10.1145/1518701.1518709 conf/chi/2009 db/conf/chi/chi2009.html#PatelARNDP09