@article{Nassar_2007,
	doi = {10.1029/2007jd008417},
	url = {https://doi.org/10.1029%2F2007jd008417},
	year = 2007,
	month = {nov},
	publisher = {American Geophysical Union ({AGU})},
	volume = {112},
	number = {D21},
	author = {Ray Nassar and Peter F. Bernath and Chris D. Boone and Andrew Gettelman and Sean D. McLeod and Curtis P. Rinsland},
	title = {Variability in {HDO}/H$\less$sub$\greater$2$\less$/sub$\greater$O abundance ratios in the tropical tropopause layer},
	journal = {Journal of Geophysical Research}
}