Bak, J., Løkke, H., Posch, M. (Ed.), de Smet, P. A. M. (Ed.), Hettelingh, J.-P. (Ed.) & Downing, R. J. (Ed.) (2001).
Denmark - National Focal Centre. In
RIVM Report (pp. 129-131). Bilthoven: Coordination Center for Effects, National Institute of Public Health and the Environment.