This paper tries to classify changes in Central Asian Turkic language through comparison between earlier (thirteenth and fourteenth centuries) and later (fifteenth and sixteenth centuries) orthographies.  In addition, the author, using the texts written till the eighteenth century like the official multi-lingual dictionary of the Qing dynasty, Wuti Qingwenqian, proposes the hypothesis that later manuscripts contain traces of early orthography.

Noda Jin, Japanese Society for the Promotion of Science, Tokyo
CER: I-6.3.A-566