Sotomayor-Ríos, A., J. Vélez-Fortuño, R. Woodbury, K. F. Schertz, and A. Sierra-Bracero. “Description and Cytology of a Form of Signal Grass (Brachiaria Brizantha Stapf.) and Its Agronomic Behavior Compared to Guinea Grass (Panicum Maximum Jack.)”. The Journal of Agriculture of the University of Puerto Rico 44, no. 4 (October 1, 1960): 208–220. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/13809.