@book{HaugDiehl, author = {Haug, Sonja and Diehl, Claudia}, title = {Aspekte der Integration}, editor = {Haug, Sonja and Diehl, Claudia}, publisher = {Verlag f{\"u}r Sozialwissenschaften}, address = {Wiesbaden}, isbn = {3-531-14772-2}, language = {de} } @article{DiehlHaug, author = {Diehl, Claudia and Haug, Sonja}, title = {Assessing migration and integration in an immigration hesitant country}, series = {Studi Emigrazione/International Journal of Migration Studies}, volume = {40}, journal = {Studi Emigrazione/International Journal of Migration Studies}, number = {152}, publisher = {Associato all'USPI - Unione Stampa Periodica Italiana}, address = {Roma}, issn = {0039-2936}, pages = {747 -- 771}, language = {en} } @techreport{HaugDiehl, type = {Working Paper}, author = {Haug, Sonja and Diehl, Claudia}, title = {External Migration in Bulgaria}, address = {Wiesbaden}, language = {en} }