@article{LOPEZ-PUERTAS05_GRL, author = "M. L{\'o}pez-Puertas and M. E. Koukouli and B. Funke and S. Gil-L{\'o}pez and N. Glatthor and U. Grabowski and T. von Clarmann and G. P. Stiller", title = "Evidence for {CH}$_4$ 7.6~$\mu$m non--local thermodynamic equilibrium emission in the mesosphere", journal= "Geophys. Res. Lett.", volume = "32", eid = "L04805", doi = "10.1029/2004GL021641", year = "2005" }