Penny, John
Ellis Horwood, 1995
Buku Teks
Kiusalaas, Jaan
Cambridge University Press , 2010
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Gilat, Amos, author
Wiley, 2014
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Brandimarte, Paolo, author
Wiley-Interscience, 2006
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Woodford, C., author
[Springer, ], 2012
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