Burghes, David N.
John Wiley & Sons, 1980
Buku Teks
Lasiecka, Irena
Society for Industrial and Applied Mathematics, 2002
eBooks
Astrom, Karl Johan, 1934-
Academic Press, 1970
Buku Teks
Anand, D.K. (Davinder K.), 1939-
Pergamon Press, 1984
Buku Teks
Brogan, William L.
Prentice-Hall, 1991
Buku Teks