@article{sa2006-sudoku,
  title = {The science behind Sudoku},
  author = {Delahaye, Jean-Paul},
  journal = {Scientific American},
  pages = {80-87},
  month = {June},
  year = {2006},
  publisher = {Nature America Inc.},
  url = {http://scientificamericandigital.com/index.cfm?fa=Products.ViewIssuePreview&ARTICLEID_CHAR=296743BD-2B35-221B-675E99055D953264},
  abstract = {No abstract},
  hal-id = {hal-00731934},
  x-genre = {revueGrandPublic},
  x-language = {EN},
  x-international-audience = {Yes},
  x-timestamp = {2012-09-13},
  x-missing = {issn,number,pdf,volume}
}