Tergas, L. E., Vélez-Santiago, J. and Méndez-cruz, A. V. (1988) “Production of grazed tropical grasses in different agroecosystems in Puerto Rico. III. Semiarid”, The Journal of Agriculture of the University of Puerto Rico, 72(2), pp. 211–219. doi: 10.46429/jaupr.v72i2.7839.