@article{Charlesworth1997,
author = {Charlesworth, B. and Partridge, L.},
title= {Ageing: Levelling of the grim reaper},
year = {1997},
doi = {10.1016/S0960-9822(06)00213-2},
journal = {Current Biology },
volume = {7},
number = {7},
pages = {R440--R442},
}