Burghes, David N., author
John Wiley & Sons, 1980
Buku Teks
Barnett, Stephen, author
Clarendon Press, 1990
Buku Teks
Mosca, Edoardo, author
Prentice-Hall, 1995
Buku Teks
Bogaert, Theodore F.
John Wiley & Sons, 1982
Buku Teks
Schattler, Heinz, author
[Springer, ], 2012
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