Fiducial Reference Measurement for Greenhouse Gases (FRM4GHG) oleh Mahesh Kumar Sha, Martine De Mazière, Justus Notholt, Thomas Blumenstock, Pieter Bogaert, Pepijn Cardoen, Huilin Chen, Filip Desmet, Omaira García, David W. T. Griffith, Frank Hase, Pauli Heikkinen, Benedikt Herkommer, Christian Hermans, Nicholas Jones, Rigel Kivi, Nicolas Kumps, Bavo Langerock, Neil A. Macleod, Jamal Makkor, Winfried Markert, Christof Petri, Qiansi Tu, Corinne Vigouroux, Damien Weidmann, Minqiang Zhou