TY - JOUR A1 - Perelli-Harris, Brienna A1 - Gerber, Theodore P T1 - Nonmarital Childbearing in Russia: Second Demographic Transition or Pattern of Disadvantage? Y1 - 2011 DO - 10.1007/s13524-010-0001-4 JF - Demography VL - 48 IS - 1 SP - 317 EP - -342 ER -