Shapiro, Stuart C., author
D. Van Nostrand Company, 1979
Buku Teks
Winston, Patrick Henry, author
Addison-Wesley, 1987
Buku Teks
Heuristech Press, 1981
Buku Teks
edited by Derek Partridge; Yorick Wilks
Cambridge Univ. Press, 1989
Buku Teks
edited by Thomas Bernold, Gunters Albers
North Holland, 1985
Buku Teks