@misc{indiciaeccc63694f52a,
  title = {Diphasic and polyphasic temporal modulations multiply apparent spatial frequency.},
  author = {V Virsu and G Nyman and P K Lehtiö},
  year = {1974},
  doi = {10.1068/p030323},
  url = {https://pubmed.ncbi.nlm.nih.gov/4459828/},
  note = {Source identifier: 4459828}
}