Clone detectors
Anyone know some good clone detectors? 

I'm searching for examples and algorithms on how they work to study them.

A clone detector is a program that detect repeated code in the src file.

An example of a clone detector i already found, was this for eclipse: http://www.cs.mcgill.ca/~swevo/clonetracker/

But I'm really interested is in documentation about how the algorithms they use works.

If anybody as some links it would be great :)
Clone detectors
===

Anyone know some good clone detectors? 

I'm searching for examples and algorithms on how they work to study them.

A clone detector is a program that detect repeated code in the src file.

An example of a clone detector i already found, was this for eclipse: http://www.cs.mcgill.ca/~swevo/clonetracker/

But I'm really interested is in documentation about how the algorithms they use works.

If anybody as some links it would be great :)