Haining Fan; Ming Gu; Jiaguang Sun; Kwok-Yan Lam (2012). "Obtaining More Karatsuba-Like Formulae over the Binary Field". IET Information Security. 6 (1): 14–19. CiteSeerX10.1.1.215.1576. doi:10.1049/iet-ifs.2010.0114.
Haining Fan; Ming Gu; Jiaguang Sun; Kwok-Yan Lam (2012). "Obtaining More Karatsuba-Like Formulae over the Binary Field". IET Information Security. 6 (1): 14–19. CiteSeerX10.1.1.215.1576. doi:10.1049/iet-ifs.2010.0114.