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[GRIDbook] The Grid Blueprint for a New Computing nfrastructure. Morgan Kaufmann Publishers; ISBN: 1558604758; 1st edition, November 1998.
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[GRIDforum] www.gridforum.org
[GRIDsecurity] www.gridforum.org/2_SEC/SEC.htm
[Ning01] Peng Ning , Sushil Jajodia , Xiaoyang Sean Wang, "Abstraction-based intrusion detection in distributed environments", ACM Transactions on Information and System Security (TISSEC) Volume 4 Issue 4, November 2001.
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try searching "GRID and (security or secure or trust or trusted)" in IEEE Xplore or ACM Portal for more refs.