TY - JOUR A1 - Röckmann, T. A1 - Brass, M. A1 - Borchers, R. A1 - Engel, A. T1 - The isotopic composition of methane in the stratosphere: high-altitude balloon sample measurements JO - Atmos. Chem. Phys. J1 - ACP VL - 11 IS - 24 SP - 13287 EP - 13304 Y1 - 2011/12/21 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/11/13287/2011/ L1 - https://acp.copernicus.org/articles/11/13287/2011/acp-11-13287-2011.pdf DO - 10.5194/acp-11-13287-2011 ER -