Barthlott, Wilhelm, Wilhelm Lauer, and Anja Placke. “Global Distribution of Species Diversity in Vascular Plants: Towards a World Map of Phytodiversity”. ERDKUNDE 50, no. 4 (December 31, 1996): 317–327. Accessed December 3, 2024. https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2350.