Sanz-Uribe, Juan Rodrigo, and Hernando Duque. “Evaluation of the Selective Coffee Fruit Knocker Brudden DSC18”. Cenicafe Journal 71, no. 2 (December 29, 2020): 92–104. Accessed March 21, 2026. https://publicaciones.cenicafe.org/index.php/cenicafe/article/view/60.