Sensible Smartphones for Southern Africa.
Nicola Bidwell , Heike Winschiers-Theophilus. (2012). Audio pacemaker: walking, talking indigenous knowledge. In Proceedings of the South African Institute for Computer Scientists and Information Technologists Conference (SAICSIT '12). Association for Computing Machinery, New York, NY, USA, 149–158.
https://doi.org/10.1145/2389836.2389855