@techreport{TechReport_2011_LANL_LA-UR-11-05668Rev.8_Martz,
  address = {Los Alamos, NM, USA},
  author = {Martz, Roger Lee},
  institution = {Los Alamos National Laboratory},
  month = {October},
  number = {LA-UR-11-05668, Rev.~8},
  title = {{The MCNP6 Book on Unstructured Mesh Geometry: User's Guide (U)}},
  year = {2011}
}