Cited from various publications:

Serbian massacres of Bosniaks in 1915

“Serbia and Montenegro. 51. The Imperial and Royal War Ministry, Vienna, February 1, 1915. Serbian troops massacre the Muslim inhabitants of Bosnia. Extortion of ransom, rape, and theft.”

Source

Sammlung von nachweisen für die verletzungen des völkerrechtes durch die mit Österreich-Ungarn krieg-führenden staaten. I. Nachtrag. Austro-Hungarian Monarchy. Ministerium des K. und K. Hauses und des Äussern. 1915

Atrocities against Bosniaks by Montenegrins in 1915

“[…] massacres perpetrated against the inhabitants of Bosnia and regarding atrocities committed by Montenegrin troops.”

Source

“Politische chronik der Österreichisch-ungarischen monarchie. Austro-Hungarian Monarchy. Haus-, Hof- und Staatsarchiv. 1915.

Serbian atrocities in Blazni of Sarajevo in 1915

“A report from Sarajevo states: In the village of Blazni, Serbs murdered the innkeeper Hufnagel—originally from Austria—on account of alleged anti-Serbian remarks. The murderers then set fire to Hufnagel’s house”

Source

Original-Extra-Blätter 1914 1915. University of Michigan. Ernst Friedrich Werner. Max Hahn & Company.

Serbian troops attack Macedonian refugees fleeing Strumica in 1914

“W.T.B. Sofia, August 23. (Report by the Agence Bulgare.) The commander of Strumica has telegraphed that three Macedonian refugees, who were attempting to reach safety on Bulgarian territory to escape Serbian pursuit, were attacked by Serbian border guards.”