@article{Ueffing2020,
author = {Ueffing, P. and Dasgupta, A.N.Z. and Kantorova, V.},
title= {Sexual activity by marital status and age: A comparative perspective},
year = {2020},
doi = {10.1017/S002193201900083X},
volume = {52},
number = {6},
pages = {860--884},
}