@Book{BMDB20180018893, title = "Milit\"{a}r-Telegraphie : isolatoren", author = "Fischer-Treuenfeld, Richard Friedrich Eberhard von, 1835-1907", publisher = "Wien : A. Hartleben", editor = "A. Hartleben", URL = "https://bibliotecavirtual.defensa.gob.es/BVMDefensa/es/consulta/registro.do?id=45060", year = "1886", }