Sonntag, Christian, and Elmar Kulke. “The Expansion of Supermarkets and the Establishment of Delivery Systems and Intermediaries for Fresh Fruit and Vegetables in the Global South – the Case of Kenya and Tanzania”. DIE ERDE – Journal of the Geographical Society of Berlin 152, no. 3 (October 1, 2021): 166-183. Accessed December 5, 2021. https://www.die-erde.org/index.php/die-erde/article/view/575.