M. Bellare and A. Palacio. Towards Plaintext-Aware Public-Key Encryption without Random Oracles. In Advances in Cryptology – ASIACRYPT 2004, Lecture Notes in Computer Science Vol. 3329, Springer-Verlag, 2004. full version (pdf)
A. W. Dent The Cramer-Shoup Encryption Scheme Is Plaintext Aware in the Standard Model. In Advances in Cryptology – EUROCRYPT 2006, Lecture Notes in Computer Science Vol. 4004, Springer-Verlag, 2006. full version (pdf)
J. Herzog, M. Liskov, and S. Micali. Plaintext Awareness via Key Registration. In Advances in Cryptology – CRYPTO 2003 Proceedings, Lecture Notes in Computer Science Vol. 2729, Springer-Verlag, 2003. (pdf)