@conference {koumboulis2008metaheuristic,
	title = {Metaheuristic Control of Substrate Concentration for an Activated Sludge Process},
	booktitle = {Proceedings of the International Conference on Modelling, Identification and Control (ICMIC 2008), Shanghai, China},
	year = {2008},
	author = {Koumboulis, FN and Kouvakas, ND and Tzamtzi, MP and Stathaki, A}
}
