@mastersthesis{MS-Thesis_1998_Folkert,
  address = {Cambridge, MA, USA},
  author = {Folkert, Michael Ryan},
  month = {June},
  school = {Massachusetts Institute of Technology},
  title = {{Monte Carlo Simulation of Neutron Shielding for Proton Therapy Facilities}},
  url = {http://hdl.handle.net/1721.1/50492},
  year = {1998}
}