Sotomayor-Ríos, A., and S. Torres-Cardona. “Agronomic Performance, Hydrocyanic Acid Potential (HCN-P) and Heterosis in Forage Sorghum Hybrids”. The Journal of Agriculture of the University of Puerto Rico, vol. 68, no. 2, Apr. 1984, pp. 131-4, doi:10.46429/jaupr.v68i2.7271.