@misc{indiciaeb608ed575c1c,
  title = {Making A Precisely Level Floor},
  author = {Simpson, William G. and Walker, William H. and Cather, Jim and Burch, John B. and Clark, Keith M. and Johnston, Dwight and Henderson, David E.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890000379},
  note = {Source identifier: 19890000379}
}