BIBLIOGRAPHY CONTRIBUTOR Josef van Ess First name Josef Last name van Ess Bibliography entries by this contributor van Ess, Josef. 1993. “Al-Naẓẓām”. In Encyclopaedia Of Islam, New Edition, 2nd ed., 7:1057-58. Leiden: E. J. Brill. van Ess, Josef. 1979. “Movement And Theory Of The "Jump" In Al-Naẓẓām's Theology”. The Second International Symposium For The History Of Arabic Science: University Of Aleppo 5 - 12 April 1979. Aleppo: Institute for the History of Arabic Science, University of Aleppo.