Reference:
Oliver JL, Carpena P, Hackenberg M, Bernaola-Galván P. IsoFinder: computational prediction of isochores in genome sequences.
Nucl. Acids Res. 32, Web Server issue: W287-W292 [Full text]

See also the references to previous versions of the algorithm:
Gene 276: 47-56, 2001 [Full text]
Gene 300: 117-127, 2002 [Full text]

The webserver for IsoFinder is no longer available. Please, use instead any of the standalone versions for different platforms:
IsoFinder SourceForge project