?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=H%C3%B6glund+Isaksson%2C+L.&rft.aulast=H%C3%B6glund+Isaksson&rft.aufirst=L.&rft.date=February+2010&rft.title=Innovation+effects+of+the+Swedish+NOx+charge&rft.genre=proceeding