Lighthill, Sir James, author
Society for Industrial and Applied Mathematics, 1975
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Pielou, E.C., author
John Wiley & Sons, 1977
Buku Teks
Chiang, Alpha C., 1927-, author
McGraw-Hill, 1984
Buku Teks
William, H.P., author
John Wiley & Sons, 1978
Buku Teks
Sheps, Mindel C., author
Chicago Press, 1973
Buku Teks