Yun Q. Shi, editor
[Springer-Verlag, ], 2012
eBooks
Wooldridge, Susan
John Wiley & Sons, 1973
Buku Teks
Katzan, Harry, Jr.
Van Nostrand Remhald, 1973
Buku Teks SO
Elden, Lars, 1944-
Society for Industrial and Applied Mathematics, 2007
eBooks
Ruby L. Kennedy...[et.al]
Prentice-Hall, 1998
Buku Teks SO