Paton Walsh, C; Bell, W; Blumenstock, Th*; Chipperfield, M P*; Galle, B*; Mellqvist, J*; Notholt, J*; Zander, R*; Demoulin, P*; Mathieu, E* (1998) Ground-based FTIR measurements from a series of european sites during the winter of 1995/96 and a comparison with a 3D chemical transport model: evidence of chlorine activation and ozone depletion. NPL Report. COEM 9

Chipperfield, M P*; Burton, M*; Bell, W; Paton Walsh, C; Blumenstock, T*; Coffey, MT*; Hannigan, J W*; Mankin, W G*; Galle, B*; Mellqvist, J*; Mahieu, E*; Zander, R*; Notholt, J*; Sen, B*; Toon, G C* (1997) On the use of HF as a reference for the comparison of stratospheric observations and models. J. Geophys. Res., 102 (D11). pp. 12901-19.

Paton Walsh, C; Bell, W; Gardiner, T; Swann, N R; Woods, P T; Notholt, J*; Schutt, H*; Galle, B*; Arlander, W*; Mellqvist, J* (1997) An uncertainty budget for groundbased FTIR column measurements of HCI, HF, N2O and HNO3 deduced from results of side-by-side instrument intercomparisons. J. Geophys. Res., 102 (D7). pp. 8867-8873.