Portuguez-García, Mary, Ana Rodríguez-Ruiz, Franklin Herrera-Murillo, and María González-Lutz. “Influence of Shade and Scarification on the Germination of Ischaemum Rugosum Salisb.”. Agronomía Mesoamericana 31, no. 3 (September 1, 2020): 781-792. Accessed December 4, 2021. https://revistas.ucr.ac.cr/index.php/agromeso/article/view/37775.