College of Veterinary Medicine Administration - 1986 Britt, J. H., Scott, R. G., Armstrong, J. D., & Whitacre, M. D. (1986). Determinants of estrous behavior in lactating Holstein cows. Journal of Dairy Science, 69(8), 2195. https://doi.org/10.3168/jds.S0022-0302(86)80653-1