The Security Problems of Rivest and Shamir's PayWord Scheme. - Norio Adachi; Yuichi Komano; Satoshi Aoki; Kazuo Ohta (CEC, 2003)

Solutions to Security Problems of Rivest and Shamir's PayWord Scheme. - Norio Adachi; Satoshi Aoki; Yuichi Komano; Kazuo Ohta (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)