@phdthesis{PhD-Thesis_2013_Langford,
  address = {College Park, MD, USA},
  author = {Langford, Thomas J.},
  school = {University of Maryland},
  title = {{Measurement of the Surface and Underground Fast Neutron Spectra with the UMD/NIST Fast Neutron Spectrometers}},
  url = {https://www.proquest.com/docview/1504828708/65B1F78353404888PQ/6},
  year = {2013}
}