Sotomayor-Ríos, A. and Torres-Cardona, S. (1984) “Agronomic Performance, Hydrocyanic Acid Potential (HCN-p) and Heterosis in Forage Sorghum Hybrids”, The Journal of Agriculture of the University of Puerto Rico, 68(2), pp. 131–141. doi: 10.46429/jaupr.v68i2.7271.