1. Launch First Iowa Program on pre-conditioning of cattle;Patrick,1967
2. Lalman D, Mourer G. Effects of preconditioning on health, performance and prices of weaned calves. Oklahoma State University Cooperative Extension Service Bulletin F-3529. 2014. Available at: http://pods.dasnr.okstate.edu/docushare/dsweb/Get/Document-2013/ANSI-3529web.pdf.%202002. Accessed October 5, 2014.
3. Attitudes and experiences with the Iowa Beef Cattle Preconditioning Program: a survey of feedlot operators;Ensley,2001
4. Economic analysis of a feeder cattle preconditioning program;Meyer;J Am Vet Med Assoc,1970
5. Preconditioning calves for the feedlot;Cole;Vet Clin North Am Food Anim Pract,1985