Balarin, Mara Regina Stipp, Julio Augusto Naylor Lisboa, Aguemi Kohayagawa, and Márcio Rubens Graf Kuchembuck. 1997. “Calcium and Phosphorus Percent Clearance Ratios of Nelore (Zebu) Cattle Related to Sex and Age”. Semina: Ciências Agrárias 18 (1):33-39. https://doi.org/10.5433/1679-0359.1997v18n1p33.