Hansen, Birger. “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 1, 1987). Set december 6, 2025. https://tidsskrift.dk/geografisktidsskrift/article/view/44467.