| Time and frequency measurements using the global positioning system MA Lombardi, LM Nelson, AN Novick, VS Zhang Cal Lab: International Journal of Metrology 8 (3), 26-33, 2001 | 260 | 2001 |
| The use of GPS disciplined oscillators as primary frequency standards for calibration and metrology laboratories MA Lombardi NCSLI Measure 3 (3), 56-65, 2008 | 149 | 2008 |
| NIST primary frequency standards and the realization of the SI second MA Lombardi, TP Heavner, SR Jefferts NCSLI Measure 2 (4), 74-89, 2007 | 122 | 2007 |
| Extending the range and accuracy of phase noise measurements FL Walls, AJD Clements, CM Felton, MA Lombardi, MD Vanek Proceedings of the 42nd Annual Frequency Control Symposium, 432-441, 1988 | 101 | 1988 |
| Fundamentals of time and frequency MA Lombardi The Mechatronics Handbook, 2002 | 90* | 2002 |
| NIST time and frequency services MA Lombardi US Department of Commerce, Technology Administration, National Institute of …, 2003 | 83 | 2003 |
| Stopwatch and timer calibrations JC Gust, RM Graham, MA Lombardi NIST Special Publication 960-12, 2009 | 55 | 2009 |
| Characterizing the performance of GPS disciplined oscillators with respect to UTC (NIST) MA Lombardi, AN Novick, VZ Zhang Proceedings of the IEEE Frequency Control Symposium, 2005 | 50 | 2005 |
| NIST Time and Frequency Radio Stations: WWW, WWVH, and WWVB GK Nelson, MA Lombardi, DT Okayama NIST Special Publication 250-67, 2005 | 34 | 2005 |
| Accurate, traceable, and verifiable time synchronization for world financial markets MA Lombardi, AN Novick, G Neville-Neil, B Cooke Journal of research of the National Institute of Standards and Technology …, 2016 | 33 | 2016 |
| Computer time synchronization M Lombardi NIST Web Site, 2000 | 31 | 2000 |
| An introduction to frequency calibration - Part I MA Lombardi Cal Lab: International Journal of Metrology 3 (1), 17-28, 1996 | 31 | 1996 |
| Practical limitations of NTP time transfer AN Novick, MA Lombardi 2015 joint conference of the IEEE international frequency control symposium …, 2015 | 29 | 2015 |
| The accuracy & stability of quartz watches M Lombardi Horological Journal 150 (2), 57, 2008 | 29 | 2008 |
| Traceability in time and frequency metrology MA Lombardi Cal Lab: The International Journal of Metrology 6, 33-40, 1999 | 28 | 1999 |
| Microsecond accuracy at multiple sites: is it possible without GPS? MA Lombardi IEEE Instrumentation & Measurement Magazine 15 (5), 14-21, 2012 | 26 | 2012 |
| Time and frequency users manual G Kamas, MA Lombardi NIST Special Publication 559, 1990 | 26 | 1990 |
| Legal and technical measurement requirements for time and frequency MA Lombardi Ncsli Measure 1 (3), 60-69, 2006 | 23 | 2006 |
| Evaluating the frequency and time uncertainty of GPS disciplined oscillators and clocks MA Lombardi NCSLI Measure 11 (3-4), 30-44, 2016 | 22 | 2016 |
| The NIST Time Measurement and Analysis Service MA Lombardi, AN Novick Proceedings of the NCSLI Workshop and Symposium, 2006 | 22* | 2006 |
