A Scalable Web Service Security Model
Khalil Challita, Hikmat Farhat1, Joseph Zalaket
Journal of Information Security Research, Vol. 2, No. 1, 2011.
DOI: 
Link: http://www.dline.info/jisr/fulltext/v2n1/2.pdf
Abstract:
http://www.dline.info/jisr/fulltext/v2n1/2.pdf