Desu, M.M.
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Feronita
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1992
UI - Skripsi (Membership)
Conover, W.J.
John Wiley & Sons, 1980
Buku Teks
Siegel, Sidney
Gramedia , 1985
Buku Teks
Sen, Pranab Kumar
Society for Industrial and Applied Mathematics, 1985
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