Modelling of particulate matter concentrations and source contributions in the Helsinki Metropolitan Area in 2008 and 2010 - Aarnio, Mia A.; Kukkonen, Jaakko; Kangas, Leena; Kauhaniemi, Mari; Kousa, Anu; Hendriks, Carlijn; Yli-Tuomi, Tarja; Lanki, Timo; Hoek, Gerald; Brunekreef, Bert; Elolahde, Timo; Karppinen, Ari (2016)