TY - JOUR A1 - van Raalte, A.A. A1 - Caswell, H. T1 - Perturbation analysis of indices of lifespan variability Y1 - 2013 DO - 10.1007/s13524-013-0223-3 JF - Demography VL - 50 IS - 5 SP - 1615 EP - -1640 ER -