@article{hayes:2009:ha,
    author = {Hayes, Brian},
     title = {The higher arithmetic},
   journal = {American Scientist},
      year = {2009},
    volume = {97},
     pages = {364–368},
     links = {\URL[FulText]{http://amsciadmin.eresources.com/libraries/documents/20097301410207456-2009-09Hayes.pdf}}}