Krone, Madlen, Kim Philip Schumacher, and Peter Dannenberg. “The Impact of Mobile Phones on Knowledge Access and Transfer of Small-Scale Horticultural Farmers in Tanzania”. DIE ERDE – Journal of the Geographical Society of Berlin 145, no. 3 (September 26, 2014): 158–161. Accessed May 21, 2024. https://www.die-erde.org/index.php/die-erde/article/view/111.