Spelet under ytan [The Game beneath the Surface] (Revised edition 2009), pp. 388-392. http://file.prio.no/files/projects/Spelet%20under%20ytan/Spelet-under-ytan.pdf; see also Peter Huchthausen and Alexandre Sheldon-Duplaix, Hide and Seek: The Untold Story of Cold War Espionage at Sea (New Jersey: John Wiley, 2009), p. 285.
repubblica.it
temi.repubblica.it
Tunander, "Swedish-German Geopolitics for a New Century – Rudolf Kjellén's ‘The State as a Living Organism'", Review of International Studies, vol. 27, no. 3, 2001; Tunander, "Swedish Geopolitics: From Rudolf Kjellén to a Swedish ‘Dual State'", Geopolitics, no. 10, autumn, 2005; Tunander, O. Cooperation & Conflict, vol. 43, no. 2, June, 2008; Tunander, "Il ritorno delle ‘geopolitica dei deboli"', Limes – Revista Italiano di Geopolitica (Special Issue: ‘Partita al Polo'), Quaderni Specili no. 3, June, 2008. http://temi.repubblica.it/limes/partita-al-polo