Arnold Ipolyi, "Magyar mitológia" (Hungarian Mythology) 1854; Gáspár Heltai, Hungarian Mythology.
"[...] the hawk or turul, which in shamanistic lore rested upon the tree of life connecting the earth with the netherworld and the skies, persevered for longer [than other clan totems] as a device belonging to the ruling house. But even this was soon eclipsed by the symbol of the double cros and, around 1200, by the striped shield coloured in the ed and white of Christ's Passion."
Martyn C. Rady, Nobility, land and service in medieval Hungary, Palgrave Macmillan, 2000, hlm.12
