@mastersthesis{MS-Thesis_2011_Ryan,
  address = {College Station, TX, USA},
  author = {Ryan, Christopher Michael},
  month = {May},
  school = {Texas A\&M University},
  title = {{Determining the Impact of Concrete Roadways on Gamma Ray Background Readings for Radiation Portal Monitoring Systems}},
  url = {https://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9341},
  year = {2011}
}