J. L. Ram?rez, R. S. Herrera, M. Cisneros, D. Verdecia, Y. ?lvarez, y B. L?pez, «Relationship between quality indicators and age indicators in Pennisetum purpureum cv. Cuba CT-169 in Cauto Valley, Cuba», Cuban J. Agric. Sci., vol. 46, n.º 3, sep. 2012.