1
Published 1992
2
by Anderson, Sarah
Published 2000
3
Published 1998
4
5
Published 1995
6
by Korber, Achim
Published 2000
7
Published 1996
8
Published 1995
9
Published 1996
10
Published 1999
11
by Masson, Paul R.
Published 1990
12
by Lanjouw, G.J.
Published 1995
13
Published 2000
14
by Smith, Allan K.
Published 1991
15
by Korber, Achim
Published 2000
16
Published 1995
17
by Song, Ligang
Published 1996
18
Published 1999
19
by Gavin, Brigid
Published 2001
20
Published 2000