Aitchison, Jean, 1938-, author
Cambridge University Press, 2001
Buku Teks
Bellman, Richard E., author
Elsevier, 1963
Buku Teks
Zabel, Robert A., author
Academic Press, 1992
Buku Teks
Elcock, Howard, author
Longman, 1991
Buku Teks
Morawetz, Cathleen S., author
Society for Industrial and Applied Mathematics, 1975
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