@article{13596,
  author = {H{\r a}vard Raddum and Marek Sys},
  title = {The Zodiac Killer Ciphers},
  abstract = {We describe the background of the Zodiac killer{\textquoteright}s cipher, and present a strategy for how to attack the unsolved Z340 cipher. We present evidence that there is a high degree of non-randomness in the sequence of ciphertext symbols in this cipher, suggesting it has been constructed in a systematic way.  Next, we use this information to design a tool for solving the Zodiac ciphers.  Using this tool we are able to re-solve the known Z408 cipher.},
  year = {2010},
  journal = {Tatra Mountains Mathematical Publications},
  volume = {45},
  pages = {75-91},
  publisher = {Tatra Mountains Mathematical Publications},
  url = {http://www.sav.sk/journals/uploads/0317152012ra-sy.pdf},
  doi = {10.2478/v10127-010-0007-8},
}