@misc{indiciae64cf1ca1feeb,
  title = {Concrete lunar base investigation},
  author = {Lin, T. D. and Senseney, Jonathan A. and Arp, Larry Dean and Lindbergh, Charles},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890047000},
  note = {Source identifier: 19890047000}
}