@misc{centro2014railroad,
  title = {Railroad Network of Portugal}
  author = {Centro de Informação Geoespacial do Exército},
  url = {http://webservices.igeoe.pt/geoserver/carta_itineraria_rede_transportes/wfs?service=WFS&REQUEST=GetCapabilities&VERSION=2.0.0},
  year = {2014}
}