Umami, N.; Suhartanto, B.; Suwignyo, B.; Suseno, N.; Herminasari, F. Effects of Season, Species and Botanical Fraction on Oxalate Acid in Brachiaria Spp. Grasses in Yogyakarta, Indonesia. Pak. J. Nutr. 2018, 17 (6), 300–305. https://doi.org/10.3923/pjn.2018.300.305.