B. Cheva-Isarakul, B. Cheva-Isarakul, S. Promma, and S. Pumisutapool, “Net Energy of Sweet Corn Husk and Cob Silage Calculated from Digestibility in Cows”, Agr. Nat. Resour., vol. 35, no. 3, pp. 299–303, Sep. 2001.