[27] "Assessment of possible migration pressure and its labour market impact following EU enlargement to Central and Eastern Europe, Part 1, John Salt et al., Research Report RR138, Brits Ministerie van Onderwijs en Werkgelegenheid, december 1999
[27] "Assessment of possible migration pressure and its labour market impact following EU enlargement to Central and Eastern Europe", Part 1, John Salt et autres, Research Report RR138, Department of Education and Employment (Royaume-Uni), décembre 1999.