1. Alexander F. Siegenfeld, Yaneer Bar-Yam, An Introduction to Complex Systems Science and Its Applications, Wiley, Hindawi Complexity, Volume 2020, Article ID 6105872, 16 pages https://doi.org/10.1155/2020/6105872, 8. septembar 2020;
2. Anderson, V. & Johnson, L. (2000). System Thinking Basics, From Concepts to Causal Loops. Waltham: MA Pegasus Communications;
3. Arjen Boin, Martin Lodge, Making sense of an existential crisis: The ultimate leadership challenge, https://www.transcrisis.eu/making-sense-of-an-existentialcrisis-the-ultimateleadership-challenge/, 17. april 2020;
4. Brankica Potkonjak-Lukić, Stanislav Stojanović, Vojna neutralnost Republike Srbije u svetlu teorije determinističkog haosa, Uticaj vojne neutralnosti Srbije na bezbednost i stabilnost u Evropi (ur. Srđan Korać), IMMP, Beograd, Hanns Seidel Stiftung-Kancelarija za Srbiju I Crnu Goru, Beograd, str. 97-117;
5. Visualcapitalist, The Impact of COVID-19 Shutdowns on the Gold Supply Chain, https://www.visualcapitalist.com/impact-of-covid-19-on-the-gold-supply-chain;