Wichmann Matthiessen, C. (1983) “B. A. Christensen and C. Jensen-Butler: Energy and urban structure: heat planning in Denmark. (Progress in planning: 18 (1982)2)”., Geografisk Tidsskrift, 83. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/44948 (Set: 7 december 2025).