A methodology for the identification of weather types to assist air quality modelling from reservoir tracers emissions. - Athanasios Sfetsos; Diamando Vlachogiannis; Nikolaos Gounaris; Athanasios Stubos; Efthimios Tagaris; Christodoulos Pilinis; Christos Chatzichistos; Reidun Kleven (EnviroInfo (1), 2004)