- RePEc:ces:ceswps:_1417
- RePEc:ces:ceswps:_1438
- RePEc:ces:ceswps:_1444
- RePEc:fam:rpseri:rp124
- RePEc:geo:guwopa:gueconwpa~05-05-12
- RePEc:iis:dispap:iiisdp029
- RePEc:iis:dispap:iiisdp030
- RePEc:iis:dispap:iiisdp043
- RePEc:iis:dispap:iiisdp049
- RePEc:iis:dispap:iiisdp058
- RePEc:iis:dispap:iiisdp068
- RePEc:jku:econwp:2005_03
- RePEc:mrr:papers:wp094
- RePEc:mrr:papers:wp095
- RePEc:mrr:papers:wp097
- RePEc:ubc:pmicro:norman-05-04-22-05-35-30
- RePEc:wpa:wuwpif:0504009
- RePEc:wpa:wuwppe:0504008
- RePEc:kan:wpaper:200307
- RePEc:ide:wpaper:3348
- RePEc:odi:bpaper:1