1. Mell, P., Grance, T.: The NIST definition of cloud computing recommendations of the national institute of standards and technology. NIST special publication, p. 7 (2011)
2. Beloglazov, A., Buyya, R., Lee, Y.C., Zomaya, A.: A taxonomy and survey of energy-efficient data centers and cloud computing systems. Adv. Comput. 82, 47–111 (2011)
3. Muirhead, R.: Data centres set to overtake the aviation industry’s carbon footprint. http://www.firestartr.co/journal/2015/7/13/data-centres-set-to-overtake-the-aviation-industrys-carbon-footprint (2015)
4. Vaughan, A.: Data centre emissions rival air travel as digital demand soars. https://www.theguardian.com/environment/2015/sep/25/server-data-centre-emissions-air-travel-web-google-facebook-greenhouse-gas (2015)
5. Borylo, P., Lason, A., Rzasa, J., Szymanski, A., Jajszczyk, A.: Green cloud provisioning throughout cooperation of a WDM wide area network and a hybrid power IT infrastructure: a study on cooperation models. Journal of Grid Computing 14(1), 127–151 (2016)