Dittmann, Jana; Kraetzer, Christian: 'Privacy concepts in biometrics: lessons learned from forensics' (Security, 2017), 'User-Centric Privacy and Security in Biometrics', Chap. 3, pp. 41-65, DOI: 10.1049/PBSE004E_ch3
IET Digital Library, https://digital-library.theiet.org/;jsessionid=84tundbegg80.x-iet-live-01content/books/10.1049/pbse004e_ch3