1
by Singer
Published 1988
2
by Sassoon
Published 1989
3
by Schumpeter
Published 1992
4
5
Published 1985
6
by Schwarzmantel
Published 1991
7
by Milner
Published 1994
8
9
by Gottlieb
Published 1992
10
by Young
Published 1989
11
12
Published 1990
13
Published 1990
14
by Wuyts
Published 1989
15
by Lipovsky
Published 1992
16
Published 1992
17
by Kolakowski
Published 1978
18
by Boettke
Published 1993
19
20
Published 1997