What are some of the good documentations for the scrypt algorithm

[Mallet]

Hi guys,
          Does anyone know of some good documentation for scrypt apart from this one http://www.tarsnap.com/scrypt.html

[escrow.ms]

http://www.bsdcan.org/2009/schedule/events/147.en.html (pdf and sile in bottom)

Ps: Search Colin Percival's scrypt, you will find many good links/documents about scrypt algorithm.

[Mallet]

Thanks. I will go through them