1. Aidoo, K.E., Hendry R. & Wood, B.J.B. (1982). Solid substrate fermentations. Advances in Applied Microbiology. 28, 201?237.
2. Auria, R., Hernandez, S., Raimbault, M. & Revah, S. (1990). Ion exchange resin: A model support for solid state growth fermentation of Aspergillus niger. Biotechnol. Techniques, 4(6), 391?396.
3. Cannel, E. & Moo-Young, M. (1980). Solid state fermentation systems. Process Biochemistry, 15, (June/July), 2?7.
4. Ding, J.S., Xu, W.G., Zhang, M.Y. & Wu, J.Y. (1988). In Dictionary of Nutrition. Publishing House of Light Industry, Beijing, China, pp 43.
5. Fujishima, T., Uchida, K. & Yoshino, H. (1972). Enzyme production by molds in sponge culture. J. Ferment. Technol. 50, 724?730.