1
Published 1988
2
3
by Bhalla
Published 1992
4
by Chang, 1929-
Published 1988
5
by Tisdell
Published 1993
6
by Drucker
Published 1997
7
by Fewsmith
Published 1994
8
9
by Hinton
Published 1991
10
by Powell
Published 1992
11
by Peebles
Published 1991