Kokot, Jozef
The logic of the Oder-Neisse frontier
Wydawnictwo Zachodnie, 1957
 Buku Teks SO
The expulsion of the German population from the territorries east of the oder-neisse-line / editor, Theodor Schieder; translated by Vivian Stranders
Federal Ministry for Expelles, Refugees and War Victims, [date of publication not identified]
 Buku Teks
Boolos, George
Logic, logic, and logic
Harvard University Press, 1998
 Buku Teks
Cole, John W.
The Hidden frontier
Academic Press, 1974
 Buku Teks
Frontier Society
Martinus Njhoff, 1971
 Buku Teks