@article{Cheung2005,
author = {Cheung, S.L.K. and Robine, J.-M. and Tu, E.J.-C. and Caselli, G.},
title= {Three dimensions of the survival curve: Horizontalization, verticalization, and longevity extension},
year = {2005},
doi = {10.1353/dem.2005.0012},
journal = {Demography},
volume = {42},
number = {2},
pages = {243--258},
}