Founding the Fatimid state : the rise of an early Islamic empire : an annotated English translation of al-Qadi al-Nu`mani's Iftitah al-Da'wa - نعمان بن محمد, ابو حنيفة; Hamid [ Haji] , 1945- (Ismaili texts and translation series (Institute of Ismaili Studies), 2006)