The references selected here focus on qualitative methods in empirical migration research. The selection criteria is the emphasis on combining qualitative approaches to quantitative data analysis.

• Borkert, Maren; Martín Pérez, Alberto; Scott, Sam & De Tona, Carla (2006):
  Introduction: Understanding Migration Research (Across National and Academic Boundaries) in Europe
  Published online in: Forum Qualitative Sozialforschung / Forum: Qualitative Social Research [On-line Journal], 7(3), Art. 3

• Singleton A. (1999):
  Combining quantitative and qualitative research methods in the study of international migration
  Source: International Journal of Social Research Methodology, Volume 2, Number 2, 1 April 1999, pp. 151-157(7), Publisher: Routledge, part of the Taylor & Francis Group