Bila, Lubabalo, Thobela Louis Tyasi, Pieter Fourie, and Aphiwe Katikati. 2020. “Classification and Regression Tree Analysis to Predict Calving Ease in Sussex Heifers Using Pelvic Area Dimensions and Morphological Trait”. Journal of Advanced Veterinary and Animal Research 8 (1):164-72. https://banglajol.info/index.php/JAVAR/article/view/76040.