editors, C. Taylor, E. Hinton, D.R.J. Owen
Pineridge Press, 1980"
Buku Teks SO
Society for Industrial and Applied Mathematics, 1996
eBooks
Keller, Herbert B.
"Waltham, Massachusetts Blaisdell Pub., 1968",
Buku Teks
Saad, Youcef
Halsted Press, 1992
Buku Teks SO
Keller, Herbert B.
Blaisdell, 1968
Buku Teks SO