Scheidat, Tobias: 'Handwriting biometrics - feature-based optimisation' (Security, 2017), 'User-Centric Privacy and Security in Biometrics', Chap. 9, pp. 193-215, DOI: 10.1049/PBSE004E_ch9
IET Digital Library, https://digital-library.theiet.org/;jsessionid=i29o6s8gaf1q.x-iet-live-01content/books/10.1049/pbse004e_ch9