1. Azzad Asset Management (2007), “Social & financial screens”, available at: http://azzad.net/new/ethical_screens.aspx.
2. DeLorenzo, Y. (2000), “Shariah supervision of Islamic mutual funds”, Proceedings of the 4th Harvard University Forum on Islamic Finance, Harvard University, Cambridge, MA.
3. Derigs, U. and Nickel, N.H. (2003), “Implementing a reference portfolio strategy in bond portfolio management”, Operations Research Proceedings, Heidelberg.
4. Dow Jones Islamic Index Group (2007), Dow Jones Islamic Market Indexes, Princeton, NJ.
5. Elgari, M.A. (2000), “Purification of Islamic Equity Funds: Methodology and Shari'ah Foundation”, Proceedings of the Fourth Harvard University Forum on Islamic Finance, Harvard University, Cambridge, MA.