Schwarzboeck T., Frey M., Rouault P., Skirlo H., Giebel S., Frechen F.-B., Schmitt R., Waschnewski J., Hartmann A., 2012, Can Electronic Noses be Used to Control Odour Abatement Measures in Sewers? – Approach by Testing 4 Multigas-sensor Systems under Realistic Conditions, Chemical Engineering Transactions, 30, 127-132.