Athanasios Moralis Vassiliki Pouli Symeon Papavassiliou Vasilis Maglaris A Kerberos security architecture for web services based instrumentation grids. 804-818 2009 25 Future Generation Comp. Syst. 7 http://dx.doi.org/10.1016/j.future.2008.11.004 db/journals/fgcs/fgcs25.html#MoralisPPM09