Casas, A., Antoni, M., Ramos, R., Cianzio, D. and Marrero, E. (1997) “Comparison of Holstein, Charbray, and Zebu Bulls for beef production under rotational grazing I. Grazing performance and economic evaluation”, The Journal of Agriculture of the University of Puerto Rico, 81(3-4), pp. 101–113. doi: 10.46429/jaupr.v81i3-4.3634.