The others - according to the Fihrist, 319, 14 - are the 17th and the 28th; see Chwolsohn, Ssabier, ii.
3 On this subject, see especially Chwolsen's Ssabier and Ssabismus.
Chwolsohn, Die Ssabier (1856), ii.
The great work of Daniel Chwolsohn, Die Ssabier u.
Hence the utmost confusion prevailed in all European accounts of them till Chwolsohn published in 1856 his Ssabier and der Ssabismus, in which the authorities for the history and belief of the IIarranians in the middle ages are collected and discussed.