@article{Kraaykamp2002,
author = {Kraaykamp, G.},
title= {Trends and countertrends in sexual permissiveness: Three decades of attitude change in thye Netherlands},
year = {2002},
doi = {10.1111/j.1741-3737.2002.00225.x},
journal = {Journal of Marriage and the Family},
volume = {64},
pages = {225--239},
}