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Buku Teks
Kingsley, Simon
McGraw-Hill, 1992
Buku Teks
Rochmah, author
Fakultas Teknik Universitas Indonesia, 2000
UI - Laporan Penelitian
Hellings, S. J.
Centrex, 1967
Buku Teks
Cheney, Margaret, author
Society for Industrial and Applied Mathematics, 2009
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