CITEAIR - Common Information to European Air. - Nick Hodges; Hermann-Josef Heich (EnviroInfo (1), 2004)

CITEAIR - Common Information to European Air. - Nick Hodges; Sef van den Elshout; Hermann-Josef Heich; Chetan Lad; Karine Léger; Fabio Nussio (EnviroInfo, 2005)

Near Real-time Comparison of Air Quality Data Across European Cities and Regions. - Sef van den Elshout; Karine Léger; Hermann-Josef Heich; Nick Hodges; Fabio Nussio (EnviroInfo, 2006)