@misc{indiciae1aded86070c4,
  title = {Staircase approximation validity for arbitrary-shaped gratings.},
  author = {Evgeny Popov and Michel Nevière and Boris Gralak and Gérard Tayeb},
  year = {2002},
  doi = {10.1364/josaa.19.000033},
  url = {https://pubmed.ncbi.nlm.nih.gov/11778730/},
  note = {Source identifier: 11778730}
}