Carbon and hydrogen isotopic composition of methane over the last 1000 years
J. A. Mischler, T. A. Sowers, R. B. Alley, M. Battle, J. R. McConnell, L. Mitchell, T. Popp, E. Sofen, and M. K. Spencer
Global Biogeochemical Cycles (13 December 2009)
DOI: 10.1029/2009GB003460
no abstract available