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Air pollution by ozone in Europe in summer 2001 : overview of exceedances of EC ozone treshold values during the summer season April-August 2001 : topic report 13/2001 / prepared by F. de Leeuw, F. Bogman. -- Luxembourg : Office for Official Publications of the European Communities, 2001. -- 24 s. : tab., grafy, mp. -- ISBN : 9291674060.
Bogman, Ferdinand. European Environment Agency
2001. ekologie. Evropa. znečišťování atmosféry. ekologie. vzduch. znečištění ovzduší. Evropa
504.06(4). 574(4)"2001"