Alex, J. (2011). A simple three-layer clarifier model, Waterma­tex – 8th IWA Symposium on Systems Analysis and Integrated Assessment, 20.-22.06.2011, San Sebastian, Spain

Alex, J.; Friedler, E.; Penn, R.; Gorfine, M.; Schütze, M. (2014). Simulation of gross solids generation and transport in a separate sewer system in Israel, 13th International Conference on Urban Drainage, Surawak, Malaysia, 7-12 September 2014

Alex, J.; Ogurek, M.; Schütze, M. (2013). A novel simulation platform to test WWTP control options, 11th IWA conference on instrumentation control and automation, 18.-20.09.2013, Narbonne, France

Alex, J.; Friedler, E.; Penn, R.; Schütze, M. (2015). Impacts of on-site greywater reuse on wastewater systems, German-Israeli Cooperation in Water Technology Research Status Conference, 22.-24.03.2015 , Berlin

Hübner, C.; Thron, M.; Alex, J.; Bangemann, T. (2013). Aktor-basierte Middleware-Plattform für fehlertolerante, verteilte SCADA-Systeme, AUTOMATION 2013, 25.-26.06.2013, VDI Wissensforum GmbH, Baden-Baden

Alex, J.; Holm, N.; Pastagiya, H. (2010). First results of the development of a combined high rate biomass-algal model for wastewater treatment applications, WWTmod 2010, 28.-30.03.2010, Quebec/ Canada

Leupolt, C.; Alex, J.; Hübner, C. (2016). Energieeffizienzanalyse von kommunalen Kläranlagen mit Simulation, Wettbewerb "Energieeffiziente Stadt" (vol. Band 7: Dienstleistungen für die energieffiziente Stadt), LIT Verlag (Hg. Koch, Marco K.; Jacobsen, Heike; Oertel, Britta), Berlin, 171–178