@article {6314,
	title = {Evidence for an earlier greenhouse cooling effect in the stratosphere before 1980 over the Northern Hemisphere},
	journal = {Atmos. Chem. Phys.},
	volume = {14},
	year = {2014},
	pages = {7705{\textendash}7720},
	url = {http://www.atmos-chem-phys.net/14/7705/2014/},
	author = {Zerefos, C. S. and Tourpali, K. and Zanis, P. and Eleftheratos, K. and Repapis, C and Goodman, A. and Wuebbles, D. and Isaksen, ISA and Luterbacher, J.}
}
