Kirsch, Uri, author
McGraw-Hill , 1981
Buku Teks
Atkinson, A.C., author
Clarendon Press, 1992
Buku Teks
Wilde, Douglass J., author
Prentice-Hall, 1964
Buku Teks SO
Farkas, Jozsef, author
John Wiley & Sons, 1984
Buku Teks
Stanley, Lisa G., author
Society for Industrial and Applied Mathematics, 2002
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