Hansson, G. O. (2001). Theoretical and typological issues in consonant harmony [Doctoral dissertation, University of California Berkeley]. eScholarship. https://escholarship.org /uc/item/9q7949gn
Hassandoust, M. (2015). The etymological dictionary of Persian (5 Vols.). Academy of Persian Language and Literature. [In Persian]
Jam, B. (2020). Vowel harmony in Persian. Lingua: An International Review of General Linguistics, 246, Article 102905. https://doi.org/10.1016/j.lingua.2020.102905
Sadeghi, A. (2001). Masaele Tarikhi-ye Zaban-e Farsi [Historical issues of Persian]. Sokhan. [In Persian]
Tabibzadeh, O. (2021). A strange and repetitive mistake in phonological descriptions of Iranian dialects. Language and Linguistics, 17(34), 333–340. https://doi.org/10.30465/lsi.2022.8445.