H. Brücker, M. Kroh, S. Bartsch, J. Goebel, S. Kühne et al., The new IAB-SOEP Migration Sample: An introduction into the methodology and the contents (SOEP Survey Papers No. 216), 2014.

J. W. Creswell and V. L. Clark, Designing and conducting mixed methods research, 2007.

O. D. Duncan, A socioeconomic index for all occupations, Occupations and social status, pp.109-138, 1961.

P. Elias, Occupational classification (ISCO-88): Concepts, methods, reliability, validity and cross-national comparability (OECD Labour Market and Social Policy Occasional Papers No. 20), 1997.
DOI : 10.1787/304441717388

R. Erikson, Social Class of Men, Women and Families, Sociology, vol.18, issue.4, pp.500-514, 1984.
DOI : 10.1177/0038038584018004003

R. Erikson and J. H. Goldthorpe, The constant flux: A study of class mobility in industrial societies, 1992.

R. Erikson, J. H. Goldthorpe, and L. Portocarero, Intergenerational Class Mobility in Three Western European Societies: England, France and Sweden, The British Journal of Sociology, vol.30, issue.4, pp.415-441, 1979.
DOI : 10.2307/589632

T. Faist, B. Bilecen, K. Barglowski, and J. J. Sienkiewicz, Transnational social protection: Migrants " strategies and patterns of inequalities. Population, Space and Place, pp.193-202, 2015.
DOI : 10.1002/psp.1903

H. B. Ganzeboom, P. M. Graaf, . De, and D. J. Treiman, A standard international socio-economic index of occupational status, Social Science Research, vol.21, issue.1, pp.1-56, 1992.
DOI : 10.1016/0049-089X(92)90017-B

V. Gayle, R. Connelly, and P. Lambert, A review of occupation-based social classifications for social research (ESRC Centre for Population Change Working Paper, 2015.

D. V. Glass, Social mobility in Britain, 1954.

G. Schiller, N. Ça?lar, A. Gulbrandsen, and T. C. , Beyond the ethnic lens: Locality, globality, and born-again incorporation, American Ethnologist, vol.43, issue.2, pp.612-633, 2006.
DOI : 10.1017/S000397560200108X

J. H. Goldthorpe and A. Mcknight, The economic basis of social class Mobility and inequality: Frontiers of research in sociology and economics, pp.109-136, 2006.

O. Groh-samberg and W. Voges, Precursors and consequences of youth poverty in Germany, Longitudinal and Life Course Studies, vol.5, issue.2, pp.151-172, 2014.
DOI : 10.14301/llcs.v5i2.281

D. B. Grusky and J. B. Sørensen, Are there big social classes?, Social stratification: Class, race, and gender in sociological perspective, pp.183-194, 2001.

D. B. Grusky and K. A. Weeden, Does the sociological approach to studying social mobility have a future?, Mobility and inequality: Frontiers of research in sociology and economics, pp.85-108, 2006.

P. H. Hartmann, Methodische und methodologische Probleme der Lebensstilforschung . Special issue 51 of Kölner Zeitschrift für Soziologie und Sozialpsychologie, pp.62-85, 2011.

R. M. Hauser and J. R. Warren, 4. Socioeconomic Indexes for Occupations: A Review, Update, and Critique, Sociological Methodology, vol.82, issue.4, pp.177-298, 1997.
DOI : 10.2307/2096215

URL : https://hal.archives-ouvertes.fr/hal-00403610

W. König, P. Lüttinger, and W. Müller, A comparative analysis of the development and structure of educational systems: Methodological foundations and the construction of a comparative educational scale (CASMIN Working Paper No, 1988.

U. Kuckartz, Mixed Methods: Methodologie, Forschungsdesigns und Analyseverfahren, 2014.
DOI : 10.1007/978-3-531-93267-5

B. Lancee and S. Pardos-prado, Group Conflict Theory in a Longitudinal Perspective: Analyzing the Dynamic Side of Ethnic Competition, International Migration Review, vol.24, issue.4, pp.106-131, 2013.
DOI : 10.1016/j.electstud.2005.01.009

N. Legewie and I. Tucci, Panel-basierte Mixed-Methods-Studien (SOEPpapers on Multidisciplinary Panel Data Research No. 872), German Institute for Economic Research, 2016.
DOI : 10.2139/ssrn.2884707

F. Parkin, Class inequality and political order: Social stratification in capitalist and communist societies, 1971.

D. Rose and D. J. Pevalin, The NS-SEC explained A researcher's guide to the National Statistics Socio-economic Classification, pp.28-43, 2003.

D. Schacht, C. Kristen, and I. Tucci, Interethnic friendships in Germany, KZfSS K??lner Zeitschrift f??r Soziologie und Sozialpsychologie, vol.127, issue.3, pp.445-458, 2014.
DOI : 10.1002/9780470316696

R. Schunck, C. Sauer, and P. Valet, Unfair Pay and Health: The Effects of Perceived Injustice of Earnings on Physical Health, European Sociological Review, vol.31, issue.6, pp.655-666, 2015.
DOI : 10.1093/esr/jcv065

J. J. Sienkiewicz, Y. Sadovskaya, and A. Amelina, The Kazakh?German social space: Decreasing transnational ties and symbolic social protection. Population, Space and Place, pp.270-281, 2015.
DOI : 10.1002/psp.1905

J. J. Sienkiewicz, P. Hapke, and T. Faist, Social comparisons in migration and inequality studies: A literature review and evidence from a pilot study (SFB 882 Working Paper No. 55), DFG Research Center (SFB) 882 From Heterogeneities to Inequalities, 2016.

M. L. Small, How to Conduct a Mixed Methods Study: Recent Trends in a Rapidly Growing Literature, Annual Review of Sociology, vol.37, issue.1, pp.57-86, 2011.
DOI : 10.1146/annurev.soc.012809.102657

R. Swedberg, The Max Weber dictionary: Key words and central concepts, 2005.

D. J. Treiman, Occupational prestige in comparative perspective, 1977.

M. Weber, The religion of India: The sociology of Hinduism and Buddhism, 1921.

M. Weber, Economy and Society: An Outline of Interpretive Sociology, 1922.
DOI : 10.1002/9780470755679.ch3

A. Wimmer and N. Schiller, Methodological Nationalism, the Social Sciences, and the Study of Migration: An Essay in Historical Epistemology1, International Migration Review, vol.37, issue.1, pp.576-610, 2003.
DOI : 10.1353/dsp.1991.0011