@techreport{Murrayn.d.,
author = {Murray, C.J.L. and Ahmad, O.B. and Lopez, A.D. and Salmon, J.A.},
title= {WHO System of Model Life Tables, WIP/GPE/EBD},
year = {n.d.},
publisher = {World Health Organization},
number = {GPE Discussion Paper Series No. 8},
}