Ramachandra, Raghavendra; Raja, Kiran B.; Busch, Christoph: 'Light field cameras for presentation attack resistant robust biometric ocular system' (Security, 2017), 'Iris and Periocular Biometric Recognition', Chap. 7, pp. 149-174, DOI: 10.1049/PBSE005E_ch7
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3971hiombgfd4.x-iet-live-01content/books/10.1049/pbse005e_ch7