引用本文:

沈忠华, 于秀源. 一个安全有效的有向门限签名方案[J]. 浙江大学学报（理学版）, 2006, 33(4): 393-395.

SHEN Zhong-Hua, YU Xiu-Yuan. . Journal of Zhejiang University (Science Edition), 2006, 33(4): 393-395.

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https://www.zjujournals.com/sci/CN/    或    https://www.zjujournals.com/sci/CN/Y2006/V33/I4/393