Kusharyoto, Wien, et al. “Effect of Culture Conditions on Phytase Production by Aspergillus ficuum in Solid-State Fermentation Using Rice Bran As Substrate”. Annales Bogorienses, vol. 13, no. 1, June 2009, pp. 1-11, doi:10.14203/ann.bogor.2009.v13.n1.1-11.