@article{267591,
      recid = {267591},
      author = {Melia, Fulvio.},
      title = {The black hole at the center of our galaxy /},
      publisher = {Princeton University Press,},
      address = {Princeton :},
      pages = {x, 189 p. :},
      year = {2003},
      url = {http://library.usi.edu/record/267591},
}