Pagan, Frank G., author
John Wiley & Sons, 1976
Buku Teks
Brailsford, D.F., author
Ellis Horwood, 1979
Buku Teks
edited by A. Van Wijngaarden [and others]
Mathematisch Centrum, 1968
Buku Teks
Randell, B., author
Academic Press, 1964
Buku Teks
Earnshaw, J.D., author
Pitman, 1970
Buku Teks