@article{Calkins2001,
author = {Calkins, L.N. and Zlatoper, T.J.},
title= {The effects of mandatory seat belt laws on motor vehicle fatalities in the United States},
year = {2001},
doi = {10.1111/0038-4941.00055},
volume = {82},
number = {4},
pages = {716--732},
}