Rivera Brenes, L., et al. “Studies on Silage in Puerto Rico I. Methods of Ensiling and Resulting Quality of Merker, Cane Tops and Para Grass Silages”. The Journal of Agriculture of the University of Puerto Rico, vol. 31, no. 2, Apr. 1947, pp. 168-79, doi:10.46429/jaupr.v31i2.12844.