@TECHREPORT{Perez:CSAIL14,
   AUTHOR = {A. Perez},
   TITLE = {RF-Based Material Detection},
   INSTITUTION = {Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology},
   ADDRESS = {Cambridge, MA},
   MONTH = {December},
   YEAR = {2014},
   PAGES = {8},
   URL = {http://people.csail.mit.edu/aperez/rx/fr.pdf}}