Lucci, Carlos de Sousa, et al. “In Situ Digestibility of Sugar-Cane (Saccharum Officinarum) As Fresh Forage or Silage, With or Without Urea”. Brazilian Journal of Veterinary Research and Animal Science, vol. 43, no. 4, Aug. 2006, pp. 502-9, https://doi.org/10.11606/issn.1678-4456.bjvras.2006.26466.