1. Day ML. Practical manipulation of the estrous cycle in beef cattle. In: Williams EI, editor. Proceedings of the 31st American Association of Bovine Practitioners. Spokane (WA): Frontier Printers, Inc.; 1998. p. 51–61.
2. Day ML. Use of progesterone to induce and synchronize estrus: Application of the CIDR. In: Proceedings 2001 Beef Improvement Federation. San Antonio (TX): National Association of Animal Breeders; 2001. p. 13–25.
3. Day ML, Grum DE. 2003. Estrous synchronization in heifers. In: Maxwell H, editor. Proceedings of the Annual Conference of the Society for Theriogenology. Columbus (OH): Society for Theriogenology; 2003. p. 145–154.
4. Fertility of cattle following PGF2α injection;Lauderdale;J Anim Sci,1974
5. Effects of PGF2α on pregnancy and estrous cycle of cattle;Lauderdale;J Anim Sci,1972