Tolong jelaskan mengenai Lihat pula dari Celah Fulda

Tujuh Hari menuju Sungai Rhein

Faringdon, Hugh. Strategic Geography: NATO, the Warsaw Pact, and the Superpowers. Routledge (1989). .

Harper, John L. American Visions of Europe. Cambridge University Press (1994). .

Vol.1, Encyclopedia of World Geography, R.W. McColl, Ed., 2005, Subj: "Fulda Gap" (by Ivan B. Welch). .