1
by Carrington
Published 2011
2
by Schrader
Published 2005
3
by Acemoglu
Published 2012
4
by Hill
Published 1996
5
by Voy
Published 1991
6
by Schrader
Published 1996
7
by Shirers
Published 1997
8
by Sugden
Published 1996
9
by Penny
Published 1999
10