Bendix, Jörg, and M. Daud Rafiqpoor. “Studies on the Thermal Conditions of Soils at the Upper Tree Line in the Páramo of Papallacta (Eastern Cordillera of Ecuador)”. ERDKUNDE 55, no. 3 (September 30, 2001): 257–276. Accessed April 30, 2025. https://www.erdkunde.uni-bonn.de/article/view/2446.