Novák, Ľubomír (2013). "Other Eastern Iranian Languages". Problem of Archaism and Innovation in the Eastern Iranian Languages (PhD). Prague: Charles University. p. 59.
Scott, D. A. (1984). "Zoroastrian Traces along the Upper Amu Darya (Oxus)". Journal of the Royal Asiatic Society of Great Britain and Ireland. 116 (2): 217–228. doi:10.1017/S0035869X00163567. JSTOR25211708. S2CID163761565.
Scott, D. A. (1984). "Zoroastrian Traces along the Upper Amu Darya (Oxus)". Journal of the Royal Asiatic Society of Great Britain and Ireland. 116 (2): 217–228. doi:10.1017/S0035869X00163567. JSTOR25211708. S2CID163761565.
Scott, D. A. (1984). "Zoroastrian Traces along the Upper Amu Darya (Oxus)". Journal of the Royal Asiatic Society of Great Britain and Ireland. 116 (2): 217–228. doi:10.1017/S0035869X00163567. JSTOR25211708. S2CID163761565.