D. Cieciora

CCQM-K120 (Carbon dioxide at background and urban level)

B. Hall, G. Rhoderick, M. Sega, 2018, Metrologia.

CCQM-K137, nitrogen monoxide (NO) in nitrogen

D. Worton, G. Rhoderick, J. Viallon, 2019, Metrologia.

International comparison CCQM-K51: Carbon monoxide (CO) in nitrogen (5 µmol mol−1)

P. Gupta, M. Gerboles, S. Musil, 2010 .

Final report on international comparison EURO.QM-S5/1166: Carbon dioxide mixtures in nitrogen

Bernhard Niederhauser, Gonçalo Baptista, Cristiane Rodrigues Augusto, 2013 .

International comparison CCQM-K74.2018: Nitrogen dioxide, 10 μmol mol-1

D. Worton, M. Sega, S. V. Aswegen, 2021, Metrologia.