Coffman , Elizabeth A., Marco A. Coutinho da Silva, Andrew J. Niehaus, Rebecca L. Pentecost, Christopher Premanandan, and Carlos R.F. Pinto. 2012. “Surgical Aspiration of a 19 Centimeter Ovarian Follicular Cyst in an Embryo Donor Cow ”. Clinical Theriogenology 4 (4):495-502. https://clinicaltheriogenology.net/index.php/CT/article/view/13609.