Caramia, G., Losi, G., Frega, N., Lercker, G., Cocchi, M., Gori, A., & Cerretani, L. (2012). Milk and butter. From the Neolithic to the current nutritional aspects. La Pediatria Medica E Chirurgica, 34(6). https://doi.org/10.4081/pmc.2012.51