A new proxy signature scheme with revocation. - Eric Jui-Lin Lu; Min-Shiang Hwang; Cheng-Jian Huang (Appl. Math. Comput., 2005)

A Time-stamping Proxy Signature Scheme Using Time-stamping Service. - Eric Jui-Lin Lu; Cheng-Jian Huang (Int. J. Netw. Secur., 2006)