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Prentice-Hall, 1988
Buku Teks
Loan, Charles Van, author
Siam, 1992
Buku Teks
Sri Andaryani, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2013
UI - Tesis (Membership)
Kawata, Tatsuo
Academic Press, 1972
Buku Teks
Titchmarsh, E, C.
Chelsea Publishing Company, 1990
Buku Teks