Cited:

“The territory of the Kingdom of Serbia increased from 48,000 to 87,000 km2, and the population increased from three million to around 4.3 to 4.4 million. Of course, the Serbs were only a minority in both Kosovo and Macedonia. What was more crucial for the history of the 20th century was that the first “ethnic cleansing” took place in the course of the Balkan Wars, such as numerous atrocities committed by Serbian troops against the Albanian civilian population.”

Source

Katrin BOECKH, Von den Balkankriegen zum Ersten Weltkrieg. Kleinstaatenpolitik und ethnische Selbstbestimmung auf dem Balkan (München 1996); SUNDHAUSSEN, Geschichte Serbiens, 214- 221; vgl. THE OTHER BALKAN WARS. A 1913 Carnegie Endowment Inquriy in Retrospect with a New Introduction and Reflections on the Present Conflict by George F. Kennan (Washington DC 1993).