@misc{indiciae17a335fd511d,
  title = {How I discovered phase contrast.},
  author = {F ZERNIKE},
  year = {1955},
  doi = {10.1126/science.121.3141.345},
  url = {https://pubmed.ncbi.nlm.nih.gov/13237991/},
  note = {Source identifier: 13237991}
}