Research in Economics
Research in Economics > 2003 > 57 > 1 > 65-81
Research in Economics > 2006 > 60 > 3 > 155-167
Research in Economics > 2010 > 64 > 1 > 1-17
Research in Economics > 2003 > 57 > 1 > 65-81
Research in Economics > 2006 > 60 > 3 > 155-167
Research in Economics > 2010 > 64 > 1 > 1-17