Authors: Francey, RJ Manning, MR Allison, CE Coram, SA Etheridge, DM Langenfelds, RL Lowe, DC Steele, LP

Citation: Rj. Francey et al., A history of delta C-13 in atmospheric CH4 from the Cape Grim air archive and antarctic firn air, J GEO RES-A, 104(D19), 1999, pp. 23631-23643