Sales, Marilia Ribeiro, et al. “Variables That Influence the Production of Cellulases and Xylanase by Aspergillus Species”. Pesquisa Agropecuaria Brasileira, vol. 45, no. 11, Jan. 2011, pp. 1290-6, https://doi.org/10.1590/S1678-3921.pab2010.v45.8583.