...the bulk of the evidence points to their being one of the northern Lur or Lak tribes, who may originally have been immigrants of Kurdish origin., Peter Avery, William Bayne Fisher, Gavin Hambly, Charles Melville (ed.), The Cambridge History of Iran: From Nadir Shah to the Islamic Republic, Cambridge University Press, 1991, (ISBN978-0-521-20095-0), p. 64.
