TY - JOUR A1 - Perelli-Harris, B. A1 - Gerber, T.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 ER -