1. Secrecy, Authentication, and Public Key Systems, by Ralph C. Merkle, Ph.D. thesis, Stanford University, 1979.
2. A Certified Digital Signature: that antique paper from 1979, Advances in Cryptology—Crypto '89, Lecture Notes on Computer Science, Vol. 435, Springer-Verlag, Berlin, pages 218–238.
3. Universal one-way hash functions and their cryptographic applications, by Moni Naor and Moti Yung, Proceedings of the Twenty-First Annual ACM Symposium on Theory of Computing, Seattle, Washington, May 15–17,1989, pages 33–43.
4. A high speed manipulation detection code, by Robert R. Jueneman, Advances in Crytopology—Crypto '86, Lecture Notes on Computer Science, Vol. 263, Berlin, pages 327–346.
5. Another birthday attack, by Don Coppersmith. Advances in Cryptology—Crypto '85, Lecture Notes on Computer Science, Vol. 218, Springer-Verlag, Berlin, pages 14–17.