Antonelli, Alexandre Coutinho, Clara Satsuki Mori, Pierre Castro Soares, Sandra Satiko Kitamura, and Enrico Lippi Ortolani. “Experimental Ammonia Poisoning in Cattle Fed Extruded or Prilled Urea: Clinical Findings”. Brazilian Journal of Veterinary Research and Animal Science 41, no. 1 (February 1, 2004): 67-74. Accessed December 5, 2021. https://www.revistas.usp.br/bjvras/article/view/6259.