Asfahl, C. Ray
John Wiley & Sons, 1992
Buku Teks SO
Morgan, Chris
Berlin: Springer-Verlag, 1984
Buku Teks
Lammineur, P.
Pergamon Press, 1984
Buku Teks SO
Marco Ceccarelli, editor
IGI Global, 2012
Buku Teks SO
Genta, Giancarlo
[Springer, ], 2012
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