0634. The Order of the Assassins: The struggle of the early Nizari Ismailis against the Islamic world. The Hague: Mouton, 1955. Rpt. New York: AMS Press, 1980. 325 pp.
0635. Reviewed in French by J. Sourdel-Thomine in Arabica III (1956): 216-217.
0636. "How Did the Early Shias Become Sectarian," J.A.O.S. LXXV (1955): 1-13.
0637. "Al-Darazi and Hamza in the Origin of the Druze Religion," J.A.O.S. LXXII (1962): 5-20.
0638. "The Ismaili State." In The Cambridge History of Iran V, ed. J. A. Boyle. Cambridge: Cambridge University Press, 1968. Pp. 422-482.
0639. "'Abd Allah b. Saba'," s.v., E.I. (new) I. English, p. 51; French, p. 52.
0640. "Alamut," s.v., E.I. (new) I. English, p. 352; French, p. 363.
0641. "Al-Darazi," s.v., E.I. (new) II. English, p. 136; French, p. 140.
0642. "Batiniyya," s.v., E.I. (new). English, pp. 1098-1100.
0643. "Da'i," s.v., E.I. (new) II. English, p. 97; French, p. 99.
0644. "Duruz," s.v., E.I. (new) II. English, p. 631; French, p. 647.
0645. "Hassan-i-Sabbah," s.v., E.I. (new) III. English, pp. 253-254; French, pp. 260-261.
0646. "Hudjdja," s.v., E.I. (new) III. English, pp. 543-545.
0647. "Ismailiya," s.v., Shorter E.I.. London, 1953. Pp. 179-180.