"Egredere de terra" : On geographical-administrative terminology in 9th century legal manuscripts - Havlíková, Lubomíra (. Byzantium, new peoples, new powers. - Cracow : Uniw. Jagielloński [u.a.], 2007. - 366 S., [4] Bl.. - Ill., Kt.. - ISBN 978-83-88737-83-1, 2007)