Hildebrand, David K., 1940-
Duxbury Press, 1991
Buku Teks
edited by Jim Albert, Jay Bennett, James J. Cochran
Society for Industrial and Applied Mathematics, 2005
eBooks
Sheard, Rod
Spon Press, 2001
Buku Teks
Artikel Jurnal
Chaffee, John
Wadsworth/Clengage Learning , 2012
Buku Teks