@unpublished{UnterhuberPfletschingerSandetal.,
  author    = {Unterhuber, Paul and Pfletschinger, Stephan and Sand, Stephan and Soliman, Mohammad and Jost, Thomas and Arriola, Aitor and Val, Inaki and Cruces, Cristina and Moreno, Juan and Pablo Garc{\´i}a-Nieto, Juan and Rodr{\´i}guez, Carlos and Berbineau, Marion and Echeverr{\´i}a, Eneko and Baz, Imanol},
  title     = {A Survey of Channel Measurements and Models for Current and Future Railway Communication Systems},
  series = {Mobile Information Systems},
  issn      = {1574-017X},
  doi       = {10.1155/2016/7308604},
  language  = {en}
}