edited by Bert Hubbard
Academic Press, 1971
Buku Teks
Dennis, John E.
Prentice-Hall, 1983
Buku Teks
Butcher, J. C. (John Charles), 1933-, (author.)
Wiley Blackwell, 2016
Buku Teks
Universitas Indonesia, 1985
UI - Skripsi (Membership)
Gottlieb, David, author
Society for Industrial and Applied Mathematics, 1993
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