Liu-Jimenez, Judith; Sanchez-Reillo, Raul: 'Iris biometrics for embedded systems' (Security, 2017), 'Iris and Periocular Biometric Recognition', Chap. 18, pp. 411-433, DOI: 10.1049/PBSE005E_ch18
IET Digital Library, https://digital-library.theiet.org/;jsessionid=bc9d6gw3u4y3.x-iet-live-01content/books/10.1049/pbse005e_ch18