@article{Treas2012,
author = {Treas, J. and Gubernskaya, Z.},
title= {Farewell to moms? Maternal contact for seven countries in 1986 and 2001},
year = {2012},
doi = {10.1111/j.1741-3737.2012.00956.x},
volume = {74},
number = {2},
pages = {297--311},
}