1
by McTaggart, Douglas.
Published 1996
2
by Mullholland, R. D.
Published 1995
3
by Gifford, D.J.
Published 1994
4
Published 1990
5
by Balkin, R. P.
Published 1991
6
by Mullholland, R. D.
Published 1995
7
by Sutton,Stephen A.
Published 1983