The following publications are possibly variants of this publication:
- Efficient Identity-Based Protocol for Fair Certified E-mail DeliveryZhenfeng Zhang, Jing Xu, Dengguo Feng. cans 2005: 200-210 [doi]
- DSA-Based Verifiable and Recoverable Encryption of Signatures and Its Application in Certified E-Goods DeliveryAleksandra Nenadic, Ning Zhang, Qi Shi, Carole A. Goble. eee 2005: 94-99 [doi]
- RSA-based Certified Delivery of E-Goods Using Verifiable and Recoverable Signature EncryptionAleksandra Nenadic, Ning Zhang, Barry M. G. Cheetham, Carole A. Goble. jucs, 11(1):175-192, 2005. [doi]
- Certified E-Mail Delivery with DSA ReceiptsAleksandra Nenadic, Ning Zhang, Qi Shi, Carole A. Goble. ipps 2005: [doi]