@misc{indiciae389da58746d8,
  title = {Grey mood: grey colours.},
  author = {D De Leo and P L Rocco and M R Dello Buono and G F Dalla Barba},
  year = {1989},
  doi = {10.1016/s0140-6736(89)90705-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/2570280/},
  note = {Source identifier: 2570280}
}