@article{Lewis2000,
author = {Lewis, S.K. and Oppenheimer, V.K.},
title= {Educational assortative mating across marriage markets: Non-hispanic whites in the United States},
year = {2000},
doi = {10.2307/2648094},
journal = {Demography},
volume = {37},
number = {1},
pages = {29--40},
}