@conference{191801,
  author = {B. Danielson},
  title = {Low-coherence interferometric measurement of group transit times in precision optical fiber delay lines},
  year = {1993},
  month = {1993-01-01},
  publisher = {Tech. Dig., Optical Fibre Measurement Conf. (OFMC), Torino, -1},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=20972},
  language = {en},
}