T. B. Friis, Finn. “O. R. W. Olsen: POST-WAR HOUSING PROBLEMS. Geneva Studies. Vol. XI, No. 6. Geneva 1940. 69 Sider”. Nationaløkonomisk tidsskrift 80 (January 1, 1942). Accessed October 17, 2026. https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/60155.