1. Ahmed, S., Grosvald, M.: Long-distance vowel-to-vowel coarticulation in Arabic: influences of intervening consonant pharyngealization and length. Lang. Speech (2018)
2. Avanesov, R.I.: Russian Standard Pronunciation [Russkoe literaturnoe proiznoshenie]. Prosveschenije, Moscow (1950)
3. Bondarko, L.V.: Phonetics of Contemporary Russian [Fonetika sovremennogo ruskogo jazyka]. Saint-Petersburg State University, St. Petersburg, Russia (1998)
4. Chiu, F., Fromont, L., Lee, A., Xu, Y.: Long-distance anticipatory vowel-to-vowel assimilatory effects in French and Japanese. In: Proceedings of the 18th International Congress of Phonetic Scences (ICPhS 2015), pp. 210–214 (2015)
5. Crosswhite, K.: Vowel Reduction in Optimality Theory. Ph.D. thesis, UCLA (1999)