Balarin, M. R. S., Lisboa, J. A. N., Kohayagawa, A., & Kuchembuck, M. R. G. (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