@article{439428,
      recid = {439428},
      author = {Zax, Jeffrey S.},
      title = {Introductory econometrics: intuition, proof, and practice  /},
      publisher = {Stanford Economics and Finance,},
      address = {Stanford, Calif. :},
      pages = {xxvii, 644 p.},
      year = {2011},
      url = {http://library.usi.edu/record/439428},
}