@misc{indiciae89a13a9c6b83,
  title = {The Matrix seating system.},
  author = {I A Trail and C S Galasko},
  year = {1990},
  doi = {10.1302/0301-620x.72b4.2143191},
  url = {https://pubmed.ncbi.nlm.nih.gov/2143191/},
  note = {Source identifier: 2143191}
}