@article{Martikainen1996,
author = {Martikainen, P. and Valkonen, T.},
title= {Mortality after death of spouse in relation to duration of bereavement in Finland},
year = {1996},
doi = {10.1136/jech.50.3.264},
journal = {Journal of Epidemiology and Community Health},
volume = {50},
number = {3},
pages = {264‒268},
}