@article {6309,
	title = {Evidence of a possible turning point in solar UV-B over Canada, Europe and Japan},
	journal = {Atmos. Chem. Phys.},
	volume = {12},
	year = {2012},
	pages = {2469-2477},
	url = {http://www.atmos-chem-phys.net/12/2469/2012/},
	author = {Zerefos, C. S. and Tourpali, K. and Eleftheratos, K. and S. Kazadzis and Meleti, C and U. Feister and T. Koskela and A. Heikkil{\"a}}
}
