Liebig, Thomas. The Labour Market Integration of Immigrants in Denmark. (2007) [PDF] 8. januar 2021 ~ Dansk Racismeforskning Liebig, Thomas. The Labour Market Integration of Immigrants in Denmark. OECD, 2007, p. 80. PDF: https://www.researchgate.net/profile/Thomas_Liebig3/publication/5205808_The_Labour_Market_Integration_of_Immigrants_in_Denmark/links/004635295f1f249596000000.pdf.