Torng, H.C., author
Addison-Wesley, 1972
Buku Teks
Goulet, Denis
Atheneum, 1973
Buku Teks
Day, William H.E., author
Society for Industrial and Applied Mathematics, 2003
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Yoshimichi Sato, author
Trans Pacific Press, 2006
Buku Teks
Stoll, Robert R.
Dover , 1961
Buku Teks