@misc{indiciae0cb7c8984ce1,
  title = {Advancing versus delaying shift systems.},
  author = {J Barton and S Folkard},
  doi = {10.1080/00140139308967855},
  url = {https://pubmed.ncbi.nlm.nih.gov/8440230/},
  note = {Source identifier: 8440230}
}