1
Published 1994
2
by Seeram
Published 2001
3
by Mueller
Published 2010
4
by Goff
Published 2002
5
by Mueller
Published 1999
6
by Mueller
Published 1999
7
by MAHLKE
Published 2001
8
by Mueller
Published 2000
9
by Mueller
Published 2002
10
by Mueller
Published 2008
11
by Alten
Published 2012
12
by Williams
Published 2009
13
by Su
Published 2002
14
by WEISMAN
Published 1999
15
by Mueller
Published 1997
16
by WURTZEL
Published 1989
17
by GARRETT
Published 2006
18
by Goff
Published 1999
19
by ALTON
Published 1998
20
by HALL
Published 1994