@Article{acp-11-9721-2011,
AUTHOR = {Gong, L. and Lewicki, R. and Griffin, R. J. and Flynn, J. H. and Lefer, B. L. and Tittel, F. K.},
TITLE = {Atmospheric ammonia measurements in Houston, TX using an external-cavity quantum cascade laser-based sensor},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {11},
YEAR = {2011},
NUMBER = {18},
PAGES = {9721--9733},
URL = {http://www.atmos-chem-phys.net/11/9721/2011/},
DOI = {10.5194/acp-11-9721-2011}
}