@article{470102,
      author = {Henle, Michael.},
      url = {http://library.usi.edu/record/470102},
      title = {Which numbers are real? [electronic resource] /},
      publisher = {Mathematical Association of America,},
      recid = {470102},
      pages = {x, 219 p. :},
      address = {Washington, D.C. :},
      year = {2012},
}