1. Anatomical differences of the donkey and mule;Burnham;AAEP Proc,2002
2. The natural superiority of the mules;Hauer,2005
3. The history and spread of donkeys in Africa;Blench,2000
4. Nutrition and feeding of donkeys;Pearson,2005
5. Functional approach to the body condition assessment of lactating donkeys as a tool for welfare evaluation;Valle;Peer J,2017