On the security of some nonrepudiable threshold proxy signature schemes with known signers. - Zuo-Wen Tan; Zhuo-Jun Liu (IACR Cryptol. ePrint Arch., 2004)

Nominative Proxy Signature Schemes. - Zuo-Wen Tan; Zhuo-Jun Liu (IACR Cryptol. ePrint Arch., 2004)

Improvement on Nominative Proxy Signature Schemes. - Zuo-Wen Tan (Int. J. Netw. Secur., 2008)