@article{hartz_malone_nelson_2016, 
  title={Three-Dimensional Geologic Model of Glacial Outwash in Mclean County, Illinois, Based on Seismic Refraction Studies}, 
  DOI={10.3390/geosciences6010009}, 
  publisher={MDPI AG}, 
  author={Hartz and Malone and Nelson}, 
  year={2016}, 
  month={Feb}
  }