Kreula, M., A. Rauramaa, and M. Tegengren. “On the Metabolism of Benzoic Acid by Cows on Purified Protein-Free and Low-Protein Feed”. Agricultural and Food Science 50, no. 2 (March 1, 1978): 177–181. Accessed December 24, 2024. https://journal.fi/afs/article/view/71960.