@inbook{4bfa7802e34741aeaa2b0b1e5766bce4,
title = "On the long-term stability of O2/N2 reference gases",
author = "RF Keeling and AC Manning and WJ Paplawsky and AC Cox",
year = "2005",
language = "English",
volume = "Global Atmosphere Watch Report Series No 161, WMO TD No 1275",
editor = "DE Worthy and L Huang",
booktitle = "Report of the 12th WMO/IAEA Meeting of Experts on Carbon Dioxide Concentration and Related Tracers Measurement Techniques",
publisher = "World Meteorological Organization",
}