@misc{indiciae8ed3033819b1,
  title = {Different models for a hard-aperture function and corresponding approximate analytical propagation equations of a Gaussian beam through an apertured optical system.},
  author = {Haidan Mao and Daomu Zhao},
  year = {2005},
  doi = {10.1364/josaa.22.000647},
  url = {https://pubmed.ncbi.nlm.nih.gov/15839271/},
  note = {Source identifier: 15839271}
}