Danka Balázs: Hypercorrect orthographic forms in the Pagan Oγuz-Nāmä: A phonetic analysis.
   In:  Ankara Papers in Turkish and Turkic Linguistics.   Turcologica  (103).  Harrassowitz Verlag, Wiesbaden, Németország, pp. 543-554. (2015)  ISBN 978-3-447-10523 -1