“Improvement of Carboxymethyl Cellulase Production from Chaetomium Cellulolyticum NRRL 18756 by Mutation and Optimization of Solid State Fermenttion”. Bangladesh Journal of Botany, vol. 40, no. 2, Feb. 2012, pp. 139-47, https://doi.org/10.3329/bjb.v40i2.9769.