EGI Federated Cloud, https://www.egi.eu/infrastructure/cloud/.
 The ESFRI roadmap, http://ec.europa.eu/research/infrastructures/index_en.cfm?pg=esfriroadmap.
 The EGI-Engage project - Engaging the Research Community towards an Open Science Commons, https://www.egi.eu/about/egi-engage/
 Helix Nebula project http://helix-nebula.eu
 Coppola, Massimo, et al. "The Contrail approach to cloud federations." Proceedings of the International Symposium on Grids and Clouds (ISGC'12). Vol. 2. 2012.
 SixSq, SlipStream, http://sixsq.com/products/slipstream.html.
 CONTRAIL project training program, http://contrail-project.eu/training.
 R. Nyren, A. Edmonds, A. Papaspyrou, and T. Metsch, “Open Cloud Computing Interface - Core," GFD-P-R.183, April 2011. [Online]. Available: http://ogf.org/documents/GFD.183.pdf
 T. Metsch and A. Edmonds, “Open Cloud Computing Interface - RESTful HTTP rendering," GFD-P-R.185, June 2011. [Online]. Available: https://www.ogf.org/documents/GFD.185.pdf
 T. Metsch and A. Edmonds, “Open Cloud Computing Interface - Infrastructure," GFD-P-R.184, April 2011. [Online]. Available: http://ogf.org/documents/GFD.184.pdf