@article{ulberg_brannen_craven_1974, title={Programs for improving reproduction in dairy herds through management}, volume={38}, DOI={10.1093/ansci/38.suppl_31.38}, journal={Journal of Animal Science}, author={Ulberg, L. C. and Brannen, L. and Craven, P. L.}, year={1974}, pages={31} }
 @article{ulberg_sheean_1973, title={Early development of mammalian embryos in elevated ambient temperatures}, journal={Journal of Reproduction & Fertility}, author={Ulberg, L. C. and Sheean, L. A.}, year={1973}, pages={155} }