@article{Bengston1991,
author = {Bengston, V.L. and Roberts, R.E.L.},
title= {Intergenerational solidarity in aging families: an example of formal theory construction},
year = {1991},
doi = {10.2307/352993},
journal = {Journal of Marriage and the Family},
volume = {53},
number = {4},
pages = {856--870},
}