0986. "The Syrian Ismailis at the Time of the Crusades." Ph.D. diss., University of Durham, 1963.
0987. "The Ismailis and their Belief in Universal Divine Order," Glasgow Univ. Or. Soc. Trans XX (1963/64): 10-22.
0988. "The Syrian Ismailis and the Doctrine of Metempsychosis," Milla Wa Milla IV (1964): 48-51.
0989. "Notes on a Syrian Ismaili Manuscript," Milla Wa Milla: Australian Bulletin of Comparative Religion IX (1969): 59-60.