Guarracino, F., author
Thomas Telford, 1999
Buku Teks
Gallagher, Richard H., author
Prentice-Hall, 1975
Buku Teks
Hollig, Klaus, author
Society for Industrial and Applied Mathematics, 2003
eBooks
John Wiley & Sons, 2002
Buku Teks
Weaver, William, author
Eresco, 1989
Buku Teks