Varga, Richard S., author
Society for Industrial and Applied Mathematics, 1990
eBooks
Springer-Verlag, 1991
Buku Teks
edited by Oscar Camara
Springer-Verlag, 2012
eBooks
Jones, A.J., author
Ellis Horwood and John Wiley & Sons, 1980
Buku Teks
Chartrand, Gary
Prindle, Weber & Schmidt , 1977
Buku Teks