Fricke, P. M. 2020. Chapter 15: Methods for pregnancy diagnosis. In: Dairy Cattle Fertility, W. D. Hoard and Sons Company, Fort Atkinson, WI, pp. 87-93.
Fricke, P. M. 2017. Reproductive programs to maximize fertility in dairy cows. In: Large Dairy Herd Management (3rd Ed.) D. K. Beede (Ed.). Elsevier Inc., Philadelphia, PA, pp. 503-519.
Giordano, J. O. and P. M. Fricke. 2017. Automated detection and prediction of estrus as a complimentary technology for reproductive management. In: Large Dairy Herd Management (3rd Ed.) D. K. Beede (Ed.). Elsevier Inc., Philadelphia, PA, pp. 1265-1277.
Fricke, P. M., A. Ricci, J. O. Giordano, and P. D. Carvalho. 2016. Methods for and Implementation of Pregnancy Diagnosis in Dairy Cows. Vet. Clin. Food Anim. 32:165-180.
Fricke, P. M. and G. C. Lamb. 2005. Potential Applications and Pitfalls of Reproductive Ultrasonography in Bovine Practice. Vet. Clin. Food Anim. 21:419-436.
Fricke, P. M. 2003. Heifer Reproduction. In: Raising Dairy Replacements. Midwest Plan Service. Ames, IA, pp. 77-83.