Ijtihad (Subscribe)
Links
The Principle of Ijtihad in Islam
http://www.al-islam.org/al-serat/ijtihad.htm
An account of the concept from a Shia perspective.
The Development of Ijtihad and Islamic Reform, 1750-1850
http://www.smi.uib.no/paj/Vikor.html
An academic paper (by Knut S Vikør, University of Bergen) analyses the use of the concept by reforming thinkers in the 19th century.