TransliterationKapilina (Pichugina) M., Panyusheva T. Priemnyy rebenok: zhiznennyy put, pomoshch i podderzhka.

Garkavi A. Ya. Skazaniya musulmanskikh pisateley o slavyanakh i russkikh (s poloviny VII veka do kontsaxveka po R.Kh.) and Dopolneniya k sochineniyu Skazaniya musulmanskikh pisateley o slavyanakh i russkikh/Garkavi A.Ya. Tales of Muslim Writers about Slavs and Russians (from the half of the 7th century to the end of the 10th century AD) and Supplements to Tales of Muslim Writers about Slavs and Russians In Russian