@mastersthesis{MS-Thesis_2006_Johnson,
  address = {Cambridge, MA, USA},
  author = {Johnson, Erik D.},
  month = {June},
  school = {Massachusetts Institute of Technology},
  title = {{Monte Carlo Model of a Low-energy Neutron Interrogation System for Detecting Fissile Material}},
  url = {http://hdl.handle.net/1721.1/41262},
  year = {2006}
}