@article{19503,
      author       = "Torres, J. A. and Pinto, J. T. and EUREF Symposium, Bad
                      Neuenahr - Ahrweiler, 10 - 13 June, 1998",
      title        = "National report of Portugal : presented at the EUREF
                      Symposium held in Bad Neuenahr - Ahrweiler, Germany 10 - 13
                      June, 1998  ",
      year         = "1998",
      note         = "1 sv.",
}