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), 2195–2202. https://doi.org/10.3168/jds.S0022-0302(86)80653-1