@article{66506,
  author = {Eric Shirley and Hadley Lawler},
  title = {Two-Phonon Infrared Spectra of Si and Ge: Calculating and Assigning Features},
  year = {2007},
  number = {76},
  month = {2007-08-16},
  publisher = {Physical Review B (Condensed Matter and Materials Physics)},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=841089},
  language = {en},
}