Vigouroux, C*; De Mazière, M*; Demoulin, P*; Servais, C*; Hase, F*; Blumenstock, I*; Kramer, M*; Schneider, J*; Mellqvist, A*; Strandberg, V*; Velazco, J*; Notholt, R*; Sussmann, W*; Rockmann, A*; Gardiner, T D; Coleman, M; Woods, P T (2008) Evaluation of tropospheric and stratospheric ozone trends over Western Europe from ground-based FTIR network observations. Atmos. Chem. Phys., 8. pp. 6865-6886.