@article{Li_2009, title={What drives the observed variability of HCN in the troposphere and lower stratosphere?}, volume={9}, ISSN={1680-7324}, url={http://dx.doi.org/10.5194/acp-9-8531-2009}, DOI={10.5194/acp-9-8531-2009}, number={21}, journal={Atmospheric Chemistry and Physics}, publisher={Copernicus GmbH}, author={Li, Q. and Palmer, P. I. and Pumphrey, H. C. and Bernath, P. and Mahieu, E.}, year={2009}, month=nov, pages={8531–8543} }