Possible Effects of Greenhouse Gases to Ozone Profiles and DNA Active UV-B Irradiance at Ground Level oleh Kostas Eleftheratos, John Kapsomenakis, Christos S. Zerefos, Alkiviadis F. Bais, Ilias Fountoulakis, Martin Dameris, Patrick Jöckel, Amund S. Haslerud, Sophie Godin-Beekmann, Wolfgang Steinbrecht, Irina Petropavlovskikh, Colette Brogniez, Thierry Leblanc, J. Ben Liley, Richard Querel, Daan P. J. Swart