Found in articles
in Medieval Georgia, Penn State Press Suny, R. G. (1994), The Making of the Georgian Nation, Indiana University Press Lang, D. M. (1966), The Georgians
82–83 Islamic Central Asia: An Anthology of Historical Sources. — Indiana University Press. — P. 71. — ISBN 978-0-253-35385-6 Köprülü, Mehmet Fuat (author)