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Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1991
UI - Skripsi (Membership)
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Department de mathematiques Ecole Polytechnique, 1997
Buku Teks
Piskunov, N.S. (Nikolai Semenovich), author
Mir, 1981
Buku Teks
Piskunov, N.S. (Nikolai Semenovich), author
Groningen, P. Noordhoff
Buku Teks
Bacon, Harold M., author
McGraw-Hill, 1955
Buku Teks