Bailley, Norman T. J.
John Wiley & Sons, 1977
Buku Teks
Kuzma, Jan W.
McGraw-Hill, 2000
Buku Teks SO
Kuzma, Jan W.
Mayfield Publ., 1984
Buku Teks
Schork, M. Anthony
Prentice-Hall, 2000
Buku Teks
Epstein, Charles L.
Society for Industrial and Applied Mathematics, 2008
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