@misc{indiciae380345edc81e,
  title = {Shadow effects in spiral phase contrast microscopy.},
  author = {Alexander Jesacher and Severin Fürhapter and Stefan Bernet and Monika Ritsch-Marte},
  year = {2005},
  doi = {10.1103/physrevlett.94.233902},
  url = {https://pubmed.ncbi.nlm.nih.gov/16090473/},
  note = {Source identifier: 16090473}
}