Comments

Authors

  • ESA


  • Geographic Information Science Center of Excellence, South Dakota State University, Brookings, South Dakota 57007 USA.

  • Manuscript received 7 June 2011; revised 23 September 2011; accepted 27 September 2011.

  • Corresponding Editor: J. R. Thompson.

  • E-mail: Christopher.Moran@sdstate.edu

Ancillary