Róna-Tas András: Zimonyi István - A concise portrayal.
In: Zimonyi István: Medieval Nomads in Eastern Europe: Collected Studies. Florilegium magistrorum historiae archaeologiaeque Antiquitatis et Medii Aevi (XVI). Editura Academiei Romane, Muzeul Brailei, Editura Istro, Bucuresti; Braila, pp. 11-12. (2014) ISBN 978-973-27-2482-8