1. Trends in the study of North Korea;Armstrong;The Journal of Asian Studies,2011
2. Bennett , Bruce W. 2014 Preparing for the possibility of a North Korean collapse RAND Corporation Testimony http://www.rand.org/content/dam/rand/pubs/testimonies/CT400/CT404/RAND_CT404.pdf
3. Der Standard 2013 Nordkorea zeigt in Propagandafilm fiktiven Einmarsch in Seoul http://derstandard.at/1363705718759/Nordkorea-zeigt-in-Propagandafilm-fiktiven-Einmarsch-in-Seoul
4. Forbes 2013 North Korea threatens missile attack on US using Modern Warfare 3 footage http://www.forbes.com/sites/insertcoin/2013/02/05/north-korea-threatens-missile-attack-on-us-using-modern-warfare-3-footage/