1 l., 524 p.// Http://odnapl1yazyk. narod/hududalal. htm lt; http: //odnapl1yazyk.narod/hududalal.htmgt;
33. Spinei V. The Great Migrations in the East and South East of Europe from the Ninth to the Thirteenth Century/V. Spinei - Cluj-Napoca: Romanian Cultural Institute - Istros Publishing House, 2003. - 546 p: ill., maps.- ISBN 9738589452
34. Spinei V. The Romanians and the Turkic nomads North of Danube Delta from tenth to the Mid-Thirteenth Century/V. Spinei.- Leiden-Boston: Brill, 2009. - XVII, 545 p .: ilustr.- ISBN 9789004175365 9004175369
