TY - JOUR A1 - Konietzka, D. A1 - Tatjes, A. T1 - Two steps of union formation: first intimate relationships and first coresidential unions in the life courses of the German Cohorts 1971–1973 and 1981–1983 Y1 - 2014 DO - 10.1080/13676261.2014.888405 JF - Journal of Youth Studies VL - 17 IS - 8 ER -