Note 6 — Chapter I · THE JEWISH DIASPORA IN EASTERN EUROPE
Israel Friedlaender translation
[The Arabic and other medieval authors write the name with a kh (= hard German ch), hence the frequent spelling Chazars. In Hebrew sources the word is written with a k (כ), except in a recently discovered document (see Schechter, Jew. Quart. Review, new series, iii. 184), where it is spelled with a k (ק). Besides Khazar and Kazar, the name is also found in the form Kozar, or Kuzar.]