1
Published 2007
2
by De Muijnck
Published 2003
3
Published 2008
4
by Armstrong
Published 1993
5
by Powell, 1939-
Published 1987
6
by Unger
Published 1990
7
by Dychtwald
Published 1986
8
by McGinn
Published 1991
9
by Popper
Published 1994
10
11
by Searle
Published 1984
12
by Murphy
Published 2006
13
by Abd Fatah Hassan
Published 1994
14
15
Published 1994
16
by Hugdahl
Published 2001
17
by Chopra
Published 1993
18
by Hugdahl
Published 2001
19
20