Schroder, Ulrich E., author
World Scientific, 1990
Buku Teks
French, A.P., author
W.W. Norton, 1968
Buku Teks
Einstein, Albert, 1879-1955, author
Pustaka Azet, 1987
Buku Teks
Wald, Robert M., author
University of Chicago Press, 1984
Buku Teks
Prokhovnik, S.J.
Melbourne University Press, 1967
Buku Teks