Hansen, Birger. 1987. “The Climate of Europe: Past, Present and Future: Natural and Man-Induced Climatic Changes: a European Perspective. Ed. By Hermann Flohn and Roberto Fantechi. Reidel, Dordrecht 1984”. Geografisk Tidsskrift 87 (januar). https://tidsskrift.dk/geografisktidsskrift/article/view/44467.