Hamzeh Khazaei, Jelena V. Misic, Vojislav B. Misic, Nasim Beigi Mohammadi. Availability analysis of cloud computing centers. In 2012 IEEE Global Communications Conference, GLOBECOM 2012, Anaheim, CA, USA, December 3-7, 2012. pages 1957-1962, IEEE, 2012. [doi]