Kingo Jacobsen., N. “Terence Armstrong: The Russians in the Arctic. Aspects of Soviet Exploration and Exploilation of the Far North 1937—57. Methuen and Co. Ltd., London 1958. 14x20 Cm. 182 Sider. 20 pi., 7 Kort. Sh. 22 6”. Geografisk Tidsskrift - Danish Journal of Geography, vol. 59, Jan. 1960, https://tidsskrift.dk/geografisktidsskrift/article/view/46484.