Economics Letters
Economics Letters > 2003 > 79 > 1 > 59-67
Economics Letters > 2003 > 79 > 1 > 27-34
Economics Letters > 2003 > 80 > 1 > 53-60
Economics Letters > 2003 > 80 > 2 > 195-199
Economics Letters > 2003 > 81 > 2 > 263-266
Economics Letters > 2003 > 81 > 3 > 341-347