Reconstruction of N2O and CH4 Content by Dial Measurements at Wavelengths of Overtone CO Laser O. A. Romanovskii, G.G. Matvienko, O. V. Kharchenko and S. V. Yakovlev EPJ Web of Conferences, 119 (2016) 05002 Published online: 07 June 2016 DOI: 10.1051/epjconf/201611905002