Zakipour Molkabadi, Esmaeil, et al. “Statistical Optimization of Tannase Production by Penicillium Sp. EZ-ZH390 in Submerged Fermentation”. Applied Food Biotechnology, vol. 2, no. 3, June 2015, pp. 63-70, doi:10.22037/afb.v2i3.8828.