Umami, N. et al. 2018. Effects of Season, Species and Botanical Fraction on Oxalate Acid in Brachiaria Spp. Grasses in Yogyakarta, Indonesia. Pakistan Journal of Nutrition. 17, 6 (May 2018), 300–305. DOI:https://doi.org/10.3923/pjn.2018.300.305.