@article{Utz2002,
author = {Utz, R.L. and Carr, D. and Nesse, R. and Wortman, C.B.},
title= {The effect of widowhood on older adults’ social participation: An evaluation of activity, disengagement, and continuity theories},
year = {2002},
doi = {10.1093/geront/42.4.522},
volume = {42},
number = {4},
pages = {522‒533},
}