Iorliam, Aamo; Ho, Anthony T.; Poh, Norman; Xi Zhao, ; Zhe Xia, : 'Benford's law for classification of biometric images' (Security, 2017), 'User-Centric Privacy and Security in Biometrics', Chap. 11, pp. 237-256, DOI: 10.1049/PBSE004E_ch11
IET Digital Library, https://digital-library.theiet.org/;jsessionid=bkgoavwcakgo.x-iet-live-01content/books/10.1049/pbse004e_ch11