@article{Wilkening1972,
author = {Wilkening, E.A. and Guerrero, S. and Ginsberg, S.},
title= {Distance and intergenerational ties of farm families},
year = {1972},
doi = {10.1111/j.1533-8525.1972.tb00821.x},
volume = {13},
number = {3},
pages = {383--396},
}