TY - JOUR A1 - Bühler, C. A1 - Philipov, D. T1 - Social capital related to fertility: Theoretical foundations and empirical evidence from Bulgaria Y1 - 2005 DO - 10.1553/populationyearbook2005s53 JF - Vienna Yearbook of Population Research VL - 2005 SP - 53 EP - -81 ER -