Rathgeb, Christian; Busch, Christoph: 'Biometric template protection: state-of-the-art, issues and challenges' (Security, 2017), 'User-Centric Privacy and Security in Biometrics', Chap. 8, pp. 173-191, DOI: 10.1049/PBSE004E_ch8
IET Digital Library, https://digital-library.theiet.org/;jsessionid=4oiafcocg8k0q.x-iet-live-01content/books/10.1049/pbse004e_ch8