Jaakkola, S., Saarisalo, E. and Heikkilä, T. 2009. Formic acid treated whole crop barley and wheat silages in dairy cow diets: effects of crop maturity, proportion in the diet, and level and type of concentrate supplementation. Agricultural and Food Science. 18, 3-4 (Jan. 2009), 234–256. DOI:https://doi.org/10.2137/145960609790059569.