@article{hartell_2008, title={Is inadequate transportation a barrier to community involvement? Evidence from the Social Capital Benchmark Survey}, number={2067}, journal={Transportation Research Record}, author={Hartell, A. M.}, year={2008}, pages={11–16} }
 @article{hartell_2007, title={Methodological challenges of environmental justice assessments for transportation projects}, number={2013}, journal={Transportation Research Record}, author={Hartell, A.}, year={2007}, pages={21–29} }