@misc{indiciae3f4a2a2063b1,
  title = {Material Concerns: Evaluating Sulfur Concrete for use in the Lunar Environment},
  author = {Grugel, Richard N. and Toutanji, Houssam},
  year = {2006},
  url = {https://ntrs.nasa.gov/citations/20060024665},
  note = {Source identifier: 20060024665}
}