Hui-xian, Yang; Yong-yong, Cai: 'Adaptively weighted orthogonal gradient binary pattern for single sample face recognition under varying illumination', IET Biometrics, 2016, 5, (2), p. 76-82, DOI: 10.1049/iet-bmt.2014.0082
IET Digital Library, https://digital-library.theiet.org/;jsessionid=7qtsu5h0j9mkg.x-iet-live-01content/journals/10.1049/iet-bmt.2014.0082