11. Lowe, Steven; Ryaboy, Dmitriy V. The Pechenegs, History and Warfare. Боняк [Boniak]. Great Soviet Encyclopedia (in Russian). 1969–1978. Archived from
Boniak, Bonyak or Maniac, also known as Boniak the Mangy (Russian: Шелудивый Боняк), was "one of the most prominent Cuman chieftains" in the late 11th century