@article{P_iv_rinta_2013,
	doi = {10.1002/jgrd.50486},
	url = {https://doi.org/10.1002%2Fjgrd.50486},
	year = 2013,
	month = {jun},
	publisher = {American Geophysical Union ({AGU})},
	volume = {118},
	number = {12},
	pages = {6837--6848},
	author = {S.-M. Päivärinta and A. Seppälä and M. E. Andersson and P. T. Verronen and L. Thölix and E. Kyrölä},
	title = {Observed effects of solar proton events and sudden stratospheric warmings on odd nitrogen and ozone in the polar middle atmosphere},
	journal = {Journal of Geophysical Research: Atmospheres}
}