Yusif B. Yusifov: On the Ancient Population of the Urmia Lake Region. In: Archaeologische Mitteilungen aus Iran. Neue Folge Band 19, 1986, ISSN0066-6033, S. 87–93, hier S. 90–93: „The tribes known under the name Su, Turukkaean and Lullubaean were differently named inhabitants of the Aratta country and probably belonged to the Altaic-Turkish language community.“
