@article{033-000-00840-6,
      author = {Fichtel, Carl E.},
      url = {http://library.usi.edu/record/40611},
      title = {Gamma ray astrophysics : new insight into the Universe /},
      publisher = {Scientific and Technical Information Branch, National  Aeronautics and Space Administration,},
      number = {033-000-00840-6},
      recid = {40611},
      pages = {xii, 401 p. :},
      address = {Washington, D.C. :},
      year = {1981},
}