H. J. O'Neill and F. J. Nunes, "Trust-based access control in storage middleware grids: A reference framework proposal to deploy in the financial sector", in 6th Doctoral Conf. on Computing, Electrical and Industrial Systems (DoCEIS), Luis M. Camarinha-Matos,Thais A. Baldissera,Giovanni Di Orio,Francisco Marques, Ed., Caparica, Springer, IFIP AICT, 2015, pp. 61-68