Valentin E. Brimkov, Reneta P. Barneva, editors
Springer, 2012
eBooks
Holdsworth, Brian, author
Butterworths, 1988
Buku Teks
Sherwani, Naveed
Kluwer Academic Publishers, 1996
Buku Teks
Kline, Raymond M., author
Prentice-Hall, 1977
Buku Teks
Parks, T.W., author
Wiley, 1987
Buku Teks