1. DAMe Project,
http://dame.inf.um.es
2. Haka,
http://www.csc.fi/english/institutions/haka
3. Meta-Access Management System (MAMS),
http://www.melcoe.mq.edu.au/projects/MAMS/
4. Alfieri, R., Cecchini, R., Ciaschini, V., dell’Agnello, L., Gianoli, A., Spataro, F., Bonnassieux, F., Broadfoot, P., Lowe, G., Cornwall, G., Jensen, J., Kelsey, D., Frohner, A., Groep, D.L., de Cerff, W.S., Steenbakkers, M., Venekamp, G., Kouril, D., McNab, A., Mulmo, O., Silander, M., Hahkala, J., Lorentey, K.: Managing dynamic user communities in a grid of autonomous resources. In: Proceedings of Conference for Computing in High Energy and Nuclear Physics (March 2003)
5. Chadwick, D.W., Otenko, A., Ball, E.: Role-Based Access Control With x.509 Attribute Certificates. IEEE Internet Computing 7(2), 62–69 (2003)