TY - JOUR A1 - Richards, S.J. A1 - Kirkby, J.G. A1 - Currie, I.D. T1 - The importance of year of birth in two-dimensional mortality data Y1 - 2006 DO - 10.1017/S1357321700004682 UR - https://doi.org/doi:10.1017/S1357321700004682 VL - 12 IS - 1 ER -