Helrich, Carl S., author
Springer, 2012
eBooks
Zahn, Markus
John Wiley & Sons, 1979
Buku Teks
Eyges, Leonard, author
Dover Publication. Inc, 2015
Buku Teks
Siegel, Daniel M.
Cambridge University Press, 1991
Buku Teks
Vanderlinde, Jack
John Wiley & Sons, 1993
Buku Teks