1
2
Published 2003
3
by Bending
Published 2006
4
by White
Published 1997
5
6
by Nagata
Published 1979
7
by Macdonald
Published 1968
8
by Williams
Published 1965
9
Published 1983
10
Published 1978
11
by Mohd Yusof Hasan
Published 1991
12
13
by Ong Choo Suat
Published 1986
14
15
Published 1984
16
by Graham
Published 1977
17
by Hose
Published 1988
18
by Skeat
Published 1966
19
by Skeat
Published 1966
20
by Phelan, Peter R.
Published 2001