Steinberg, David Joel
Westview Press, 1994
Buku Teks SO
Maruya, Saiichi
Kodansha International, 1986
Buku Teks SO
Saad, Ibrahim
ISEAS, 1911
Buku Teks SO
Carroll, R.W.
Academic Press, 1976
Buku Teks SO
edited by Michael P. Mortell, Robert E. O'Malley, Alexei Pokrovskii, Vladimir Sobolev
Society for Industrial and Applied Mathematics, 2005
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