Wales, March 2001. 2002 – Scent – Smell – Stink – Stech: How to draw the nuisance line, keynote paper, w: Proceedings of Enviro 2002, April 7-12, Melbourne 2002 – Dynamic olfactometry – fundamentals, developments and wastewater applications, keynote paper, w: Proceedings of the 6th IWA conference on off-flavours in the aquatic environment, International Water Association, Barcelona, October 7-10, 2002