@misc{916621, author = {Michael A. Lombardi}, title = {An Evaluation of Dependencies of Critical Infrastructure Timing Systems on the Global Positioning System (GPS)}, year = {2021}, month = {2021-11-01 04:11:00}, publisher = {Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933484}, doi = {https://doi.org/10.6028/NIST.TN.2189}, language = {en}, }