@conference{51856,
  author = {Michael Lombardi and J. and Nelida Diaz-Munoz},
  title = {SIM time scales},
  year = {2010},
  month = {2010-10-27},
  publisher = {Proc. 2010 CENAM Symposium of Metrology, Santiago de Queretaro, -1},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906268},
  language = {en},
}