HANSEN, B. Climatic changes on a yearly to Millennial Basis: geological, historical and instrumental records: proceedings of the second Nordic symposium on climatic changes and related problems, held in Stockholm, Sweden, May 16-20, 1983. Ed. by N.-A. Morner and W. Karlen. Reidel, Dordrecht 1984. Geografisk Tidsskrift, v. 87, 1 jan. 1987.