@book{whitecotton_david_darmody_price_1999, 
  title={Foot Traffic Effects on Grassland Soil Properties at the U.S. Air Force Academy, Colorado}, 
  DOI={10.21236/ada371847}, 
  institution={Defense Technical Information Center}, 
  author={Whitecotton and David and Darmody and Price}, 
  year={1999}, 
  month={Dec}
  }