1. M. Aynsley et al., in Bioprocess Design and Control (Eds: A. Fiechter), Springer, Berlin, Heidelberg 1993.
2. Comparative study of black-box and hybrid estimation methods in fed-batch fermentation
3. Evaluation of a new annular capacitance probe for biomass monitoring in industrial pilot-scale fermentations
4. P. Ries, Dissertation, ETH Zuerich, 1983.
5. H. Zhang, in Computational Intelligence Techniques for Bioprocess Modelling, Supervision and Control (Eds: M. d. C. Nicolletti, L. C. Jain), Springer- Verlag, Berlin Heidelberg 2009.