Theera Rukkwamsuk, Sunthorn Rungruang, Apassara Choothesa, and Theo Wensing, “Performance of Periparturient Dairy Cows Fed Alfalfa Hay in Total Mixed Ration : A Field Trial in Thailand”, Agr. Nat. Resour., vol. 42, no. 1, pp. 11–18, Mar. 2008.