http://www.kas.de/wf/doc/kas_450-2190-2-30.pdf?170424105349
https://www.brookings.edu/interactives/ukraine-index/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=251034578&utm_source=hs_email
https://www.foreignaffairs.com/europe/last-ambassador-memoir-collapse-yugoslavia
http://hmics.org/sites/default/files/publications/HMICS20170621PUB.pdf