@misc{indiciae3f37fa27a57e,
  title = {Measuring visual opacity using digital imaging technology.},
  author = {Michael J McFarland and Spencer H Terry and Michael J Calidonna and Daniel A Stone and Paul E Kerch and Steven L Rasmussen},
  year = {2004},
  doi = {10.1080/10473289.2004.10470908},
  url = {https://pubmed.ncbi.nlm.nih.gov/15061612/},
  note = {Source identifier: 15061612}
}