1
by Kramer Sr., A.L.N.
Published 1993
2
by Nelson, Andrew N.
Published 1999
3
4
Published 1979
5
by Choi Kim Yok
Published 1999
6
Published 1998
7
Published 2005
8
Published 2005
9
Published 2003
10
11
Published 2003
12
Published 2002
13
by Smyth, David
Published 2001
14
Published 1988
15
by Snell, Rupert
Published 2004
16
Published 2011
17
by Kyubyong Park
Published 2012
18
19
Published 2006
20