@article{Toohey_2007, title={Balloon-borne radiometer measurements of Northern Hemisphere mid-latitude stratospheric HNO<sub>3</sub> profiles spanning 12 years}, volume={7}, ISSN={1680-7324}, url={http://dx.doi.org/10.5194/acp-7-6075-2007}, DOI={10.5194/acp-7-6075-2007}, number={23}, journal={Atmospheric Chemistry and Physics}, publisher={Copernicus GmbH}, author={Toohey, M. and Quine, B. M. and Strong, K. and Bernath, P. F. and Boone, C. D. and Jonsson, A. I. and McElroy, C. T. and Walker, K. A. and Wunch, D.}, year={2007}, month=dec, pages={6075–6084} }