Gobbe, J., Swenne, A., & Louant, BP. (1981). [Brachiaria-ruziziensis German and Evrard, Natural Diploids and Induced Autotetraploids - Criteria of Identification]. L’Agronomie Tropicale, 36(4), 339-346. https://hdl.handle.net/2078.5/144645 (Original work published 1981)