BIBLIOGRAPHY CONTRIBUTOR E. van Donzel First name E. Last name van Donzel Bibliography entries by this contributor King, David, P. Bearman, Th. Bianquis, C.E. Bosworth, E. van Donzel, and W.P. Heinrichs. 1995. “Rubʿ [Quadrant]”. In Encyclopaedia Of Islam, New Edition, 2nd ed., 8:574-575. Leiden: E. J. Brill.