Khalili, H., Varvikko, T., Toivonen, V., Hissa, K. and Suvitie, M. 1997. The effects of added glycerol or unprotected free fatty acids or a combination of the two on silage intake, milk production, rumen fermentation and diet digestibility in cows given grass silage based diets. Agricultural and Food Science. 6, 5-6 (Dec. 1997), 349–362. DOI:https://doi.org/10.23986/afsci.72798.