Orlandi, Mario, Maria Claudia Curadi, Lucia Monti, and Tiziana Maria Piera Cattaneo. 2016. “Sialylated Oligosaccharides in Mare and Ass Milk: Preliminary Results”. Progress in Nutrition 18 (3), 283-87. https://mattioli1885journals.com/index.php/progressinnutrition/article/view/5148.