@conference{826796, author = {J. Lopez-Romero and Michael Lombardi}, title = {Challenges in SIM to Create a Coordination Program for Time and Frequency}, year = {2010}, month = {2010-07-26 00:07:00}, publisher = {21st Century Innovations in Metrology, Providence, RI, US}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905720}, language = {en}, }