Diagre, Denis. “The Belgian ‘plant-hunters’ During the Reign of Leopold I (1831-1870): Success and Paradox”. Circumscribere International Journal for the History of Science 9 (February 21, 2011): 78–99. Accessed December 5, 2025. https://revistas.pucsp.br/index.php/circumhc/article/view/5273.