An Exact A* Method for Deciphering Letter-Substitution Ciphers Eric Corlett author Gerald Penn author 2010-07 text Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics Jan Hajič editor Sandra Carberry editor Stephen Clark editor Joakim Nivre editor Association for Computational Linguistics Uppsala, Sweden conference publication corlett-penn-2010-exact https://aclanthology.org/P10-1106/ 2010-07 1040 1047