Vanderhasselt A., Aspegren H., Vanrolleghem P. and Verstraete W. (1999). Settling characterisation using on-line sensors at a full-scale wastewater treatment plant. Water SA, 25(4), 453-458.

Goethals, P.L.M., Vanrolleghem, Peter A., Bauwens, W., De Pauw, N. (1999) Modelling, indices of biotic integrity and meta-databases as a bridge between monitoring and management of aquatic systems. In: Proceedings Winter Symposium of the Dutch-Flemish Association on Ecology (NecoV). Antwerp, Belgium, December 8-9 1999. 3-6.

Gillot, S., De Clercq, B., Defour, D., Simoens, F., Gernaey, K.V., Vanrolleghem, Peter A. (1999) Optimisation of wastewater treatment plant design and operation using simulation and cost analysis. In: Proceedings 72nd Annual WEF Conference and Exposition. New Orleans, USA, October 9-13 1999. (on CD-ROM).

De Clercq, B., Coen, F., Vanderhaegen, B., Vanrolleghem, Peter A. (1999) Calibrating simple models for mixing and flow propagation in waste water treatment plants. Wat. Sci. Tech., 39(4), 61-69.

Gernaey, K.V., Maffei, D., Vanrolleghem, Peter A., Verstraete, W. (1999) A new pH-based procedure to model toxic effects on nitrifiers in activated sludge. J. Chem. Technol. Biotechnol., 74, 679-687.

Gillot, S., Vermeire, P., Jacquet, P., Grootaerd, H., Derycke, D., Simoens, F., Vanrolleghem, Peter A. (1999) Integration of wastewater treatment plant investment and operating costs for scenario analysis using simulation. In: Proceedings 13th Forum Applied Biotechnology. Med. Fac. Landbouww. Univ. Gent, 64/5a, 13-20.

De Clercq, B., Vanderhaegen, B., Harmand, J., Vanrolleghem, Peter A. (1999) Evaluation of a rule-based control strategy for an industrial equalization facility with technical/physical constraints. In: Proceedings European Control Conference ECC'99. Karlsruhe, Germany, August 31 - September 3 1999. (on CD-ROM).

Yuan, Z., Bogaert, H., Devisscher, M., Vanrolleghem, Peter A., Verstraete, W. (1999) On-line estimation of the maximum specific growth rate of nitrifiers in activated sludge systems. Biotechnol. Bioeng., 65, 265-273.

De Smet, B., Hesta, M., Seynaeve, M., Janssens, G., Vanrolleghem, Peter A., De Wilde, R. (1999) The influence of supplemental alpha-galactosidase and phytase in a vegetable ration for dogs on the digestibility of organic components and phytate phosphorus. J. Anim. Physiol. a. Anim. Nutr., 81, 1-8.

Rousseau, D.P.L., Goethals, P.L.M., Meirlaen, J., Verboven, J., De Pauw, N., Vanrolleghem, Peter A. (1999) Monitoring and modelling of free water surface constructed wetlands. In: Proceedings 13th Forum Applied Biotechnology. Med. Fac. Landbouww. Univ. Gent, 64/5a, 191-196.

Gernaey, K.V., Petersen, B., Ottoy, J.-P., Vanrolleghem, Peter A. (1999) Biosensing activated sludge. WQI, May/June 1999, 16-21.

Yuan, J.Q., Vanrolleghem, Peter A. (1999) Rolling learning-prediction of product formation in bioprocesses. J. Biotechnol., 69, 47-62.

Vanrolleghem, Peter A., De Clercq, B., Gillot, S., Vanderhaegen, B., Vanhooren, H., Yuan, Z. (1999) Use of economic optimisation criteria in control engineering of activated sludge systems. Lecture held at the Mini-Symposium on Process Control for Sludge Production and Treatment. Wageningen, The Netherlands, January 14th 1999. pp. 28.

Debusscher, D., Vanhooren, H., Vanrolleghem, Peter A. (1999) Benchmarking two biomass loading control strategies for activated sludge WWTPs. In: Proceedings 13th Forum Applied Biotechnology. Med. Fac. Landbouww. Univ. Gent, 64/5a, 127-132.

Rauch, W., Vanhooren, H., Vanrolleghem, Peter A. (1999) A simplified mixed-culture biofilm model. Wat. Res., 33, 2148-2162.

De Clercq, B., Vanderhasselt, A., Vanderhaegen, B., Vanrolleghem, Peter A. (1999) Control of polymer addition to maintain good clarifier performance. In: Proceedings 18th Benelux Meeting on Systems and Control. Houthalen, Belgium, March 3-5 1999. 40.

Van Vooren, L., Lessard, P., Ottoy, J.-P., Vanrolleghem, Peter A. (1999) pH buffer capacity based monitoring of algal wastewater treatment. Environ. Technol., 20, 547-561.

Harmand, J., Steyer, J.-P., Devisscher, M., Vanrolleghem, Peter A. (1999) Fuzzy supervisory control of an industrial waste water equalization system. In: Proceedings 5th International Conference on Information Systems Analysis and Synthesis (ISAS'99), Orlando, Florida, USA, July 31-August 4 1999. Vol. VII, 95-101.

Petersen, B., Gernaey, K.V., Ottoy, J.-P., Vanrolleghem, Peter A. (1999) Application of biosensors in wastewater treatment. In: Proceedings 22e Symposium sur les eaux usées et 11e atelier sur l'eau potable. Montréal, Canada, October 20-21 1999. 204-210.

Devisscher, M., Harmand, J., Steyer, J.-P., Vanderhaegen, B., Vanrolleghem, Peter A. (1999) A combination of fuzzy and linear control techniques for the equalization of an industrial wastewater treatment plant. In: Proceedings 18th Benelux Meeting on Systems and Control. Houthalen, Belgium, March 3-5 1999. 70.