@techreport{Perelli-Harris2009, author = {Perelli-Harris, B. and Sigle-Rushton, W. and Lappegard, T. and Jasilioniene, A. and Di Giulio, P. and Keizer, R. and Kreyenfeld, M.}, title= {Examining nonmarital childbearing in Europe: How does union context differ across countries}, year = {2009}, publisher = {Max Planck Institute for Demographic Research}, address = {Rostock}, number = {MPIDR working paper WP-2009-021}, }