Breuning Madsen, H. og Aagaard Holst, K. (1988) “A Nation-wide Mapping of Dry Soils for Plant Production - A case study from Denmark”, Geografisk Tidsskrift, 88. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/44612 (Set: 7 december 2025).