1. R. Kannan, Studies on extractive fermentation of Bacillus licheniformis α-amylase using PEG-citrate aqueous two-phase system, M.Tech. Thesis, School of Biochemical Engineering, IT, BHU, Varanasi, India, 1997.
2. Purification of enzymes by liquid-liquid extraction;Kula;Adv. Biochem. Eng.,1982
3. Technological aspects of extractive fermentation using aqueous two-phase systems;Banik;World J. Microbiol. Biotechnol.,2003
4. Prediction of kLa in yeast broths;Montes;Process Biochem.,1998
5. Prediction of oxygen mass transfer coefficients in stirred bioreactors for bacteria, yeasts and fungus broths;Galaction;Biochem. Eng. J.,2004