@misc{indiciae31fa634f9127,
  title = {[Tests on subjective refraction determination using macular differences in sensitivity towards light].},
  author = {G O Bastian and P Birkenhauer and P Wolf},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1242917/},
  note = {Source identifier: 1242917}
}