Scoon, Craig; Ko, Ryan K.: 'The Waikato Data Privacy Matrix' (Security, 2017), 'Data Security in Cloud Computing', Chap. 11, pp. 243-259, DOI: 10.1049/PBSE007E_ch11
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3k9tqw53aretd.x-iet-live-01content/books/10.1049/pbse007e_ch11