1
by Earle
Published 1995
2
Published 2010
3
by Earle
Published 2008
4
Published 2001
5
by Earle
Published 2001
6
Published 2004
7
by Shah
Published 1998
8
by Kalameja
Published 2009
9
Published 2002
10
by STINCHCOMB
Published 2003
11
by FRENCH
Published 1972
12
by Kalameja
Published 2002
13
by BETHUNE
Published 2002
14
by LOCKHART
Published 2001
15
by Banach
Published 1998
16
by CHENG
Published 1999
17
Published 1993
18
by Kalameja
Published 1998
19
by Earle
Published 1994
20
by CHENG
Published 1998