@article{BUCHWITZ15,
   author = "M. Buchwitz and M. Reuter and O. Schneising and H. Boesch and
            S. Guerlet and B. Dils and I. Aben and R. Armante and
            P. Bergamaschi and T. Blumenstock and H. Bovensmann and
            D. Brunner and B. Buchmann and J. P. Burrows and A. Butz and
            A. Ch{\'e}din and F. Chevallier and C. D. Crevoisier and
            N. M. Deutscher and C. Frankenberg and F. Hase and
            O. P. Hasekamp and J. Heymann and T. Kaminski and A. Laeng and
            G. Lichtenberg and M. {De Mazi{\`e}re} and S. No{\"e}l and
            J. Notholt and J. Orphal and C. Popp and R. Parker and
            M. Scholze and R. Sussmann and G. P. Stiller and T. Warneke
            and C. Zehner and A. Bril and D. Crisp and D. W. T. Griffith
            and A. Kuze and C. O`Dell and S. Oshchepkov and V. Sherlock
            and H. Suto and P. Wennberg and D. Wunch and T. Yokota and
            Y. Yoshida",
   title  = "The {G}reenhouse {G}as {C}limate {C}hange {I}nitiative
             ({GHG-CCI}): {C}omparison and quality assessment of
             near-surface-sensitive satellite-derived {CO}$_2$ and
             {CH}$_4$ global data sets",
   journal= "Remote Sensing of Environment",
   volume = "162",
   pages  = "344-362",
   year   = "2015"   }