Landau, Lev D.
Pergamon Press, 1980
Buku Teks
Mandl, F.
John Wiley & Sons, 1971
Buku Teks
edited by George H. Weiss
Society for Industrial and Applied Mathematics, 1994
eBooks
Barlow, Roger
John Wiley & Sons, 1991
Buku Teks
Bertin, Eric
Springer, 2012
eBooks