Dom, 19/09/2004 / Vie, 24/09/2004

International Water Association (IWA)

Sáb, 11/10/2003 / Mié, 15/10/2003

Water Environment Federation

Mié, 19/11/2003 / Sáb, 22/11/2003

University of Manitoba (Canada); Ukrainian State University of Chemical Technology (Ucrania); Dnepropetrovsk Municipal Administration (Ucrania)

Mar, 01/06/2004 / Vie, 04/06/2004

International Water Association (IWA)

Mar, 18/11/2003 / Mié, 19/11/2003

Paper Technology Specialists (PTS)

Lun, 26/01/2004 / Jue, 29/01/2004

Asian Institute of Technology

Mar, 09/08/2005 / Mar, 12/08/2008

Instituto Sudafricano del Agua (WISA) y la Asociación Internacional del Agua (IWA)

Mié, 11/05/2005 / Dom, 15/05/2005

Estado Federal de Berlín

Jue, 01/12/2005 / Vie, 02/12/2005

Association of Wastewater Treatment Experts(AWWTE), International Water Association (IWA), Global Water Partnership(GWP), European Water Association (EWA)

Dom, 10/09/2006 / Jue, 14/09/2006

International Water Association