1 See Shahbazi, A. Shapur, Ferdowsī: A Critical Biography (Costa Mesa, 1991), 23–30Google Scholar, for a comprehensive review of the evidence; despite all the calculations offered, he makes the surprising mistake of giving AD 939–40 as the equivalent of 329 AH, which actually covers 940–41. If the date in January 940 is correct, this should be 328 AH. See also Shahbazi, , “Ferdowsī i. Life,” Encyclopaedia Iranica, 9, 514–515Google Scholar, and de Blois, François, Persian Literature. A Bio-bibliographical Survey, 5/1 Poetry to ca. A.D. 1100, ed. by Storey, C. A. (London, 1992), 112–117.Google Scholar