1. Volatile fatty acids as indicators of process imbalance in anaerobic digestors;Ahring;Appl. Microbiol. Biotechnol.,1995
2. APHA, AWWA, WPCF (1985) Standard Methods for the Examination of Water and Wastewater, 16th ed. American Public Health Organisation, Washington DC, USA.
3. Björnsson L., Hörnsten E. G. and Mattiasson B. (in press) Utilization of a Pd-MOS sensor for on-line monitoring of dissolved hydrogen in anaerobic digestion. Biotechnol. Bioengng.
4. Dissolved hydrogen concentration as an on-line control parameter for the automated operation and optimization of anaerobic digesters;Cord-Ruwisch;Biotechnol. Bioengng.,1997
5. Use of a simple titration procedure to determine H2CO3 alkalinity and volatile fatty acids for process control in waste-water treatment;de Haas;Water SA,1995