1. Baker, R.A. and J.H. Bruemmer. 1972. Pectinase stabilization in orange juice cloud. Agric. Food Chem. 20: 1169–1173.
2. Bergmeyer, H.U. 1983. Proteinase K. In: Methods of Enzymatic Analysis 3rd edn., Vol. 2 (Bergmeyer, H.U., ed.), pp. 299–300, Verlag Chemie, Weinheim.
3. Blain, J.A., J.G. Anderson, J.R. Todd and M. Divers. 1979. Cultivation of filamentous fungi in the disc fermenter. Biotechnol. Lett. 1: 269–274.
4. Faraj, K.A. 1985. A Study of Pectic Substances and their Enzymic Degradation. PhD Thesis, University of Strathclyde, Glasgow.
5. Fogarty, W.M. and C.T. Kelly. 1983. Pectic Enzymes. In: Microbial Enzymes and Biotechnology (Fogarty, W.M., ed.), pp. 131–182, Applied Science Publ., London.