@article{Stene1981,
author = {Stene, J. and Stene, E. and Stengel-Rutkowski, S. and Murken, J.D.},
title= {Paternal age and Down’s syndrome data from prenatal diagnosis},
year = {1981},
doi = {10.1007/BF00293059},
journal = {Human Genetics},
volume = {59},
number = {2},
pages = {119--124},
}