@misc{misc,
  author = {W S M Werner and W Smekal and C J Powell},
  title = {Simulation of electron spectra for surface analysis (SESSA) version 2.1 user{\textquoteright}s guide:},
  year = {2017},
  month = {2017-12-01 05:12:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.NSRDS.100-2017},
  language = {en},
}