@article{1309176,
  author = {Shigeo Tanuma and Cedric J. Powell and David Penn},
  title = {Use of Sum Rules on the Energy-Loss Function for the Evaluation of Experimental Optical Data},
  year = {1993},
  number = {62},
  month = {1993-01-01 00:01:00},
  publisher = {Journal of Electron Spectroscopy and Related Phenomena},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620423},
  language = {en},
}