Precision measurement of the atomic mass of 6Li using a Penning ion trap mass spectrometer. - Thomas Patrick Heavner; Steven R. Jefferts; G. H. Dunn (IEEE Trans. Instrum. Meas., 1999)

Characterization of a cold cesium source for PARCS: Primary Atomic Reference Clock in Space. - Thomas P. Heavner; Leo Hollberg; Steven R. Jefferts; John Kitching; W. M. Klipstein; D. M. Meekhof; Hugh G. Robinson (IEEE Trans. Instrum. Meas., 2001)

Accuracy evaluation of a cesium fountain primary frequency standard at NIST. - D. M. Meekhof; Steven R. Jefferts; M. Stepanovic; Thomas E. Parker (IEEE Trans. Instrum. Meas., 2001)

Optical molasses loaded from a low-velocity intense source of atoms: an atom source for improved atomic fountains. - Elizabeth A. Donley; Thomas P. Heavner; Steven R. Jefferts (IEEE Trans. Instrum. Meas., 2005)

Recent improvements in NIST-F1 and a resulting accuracy of δf/f=0.61×10-15. - Thomas P. Heavner; Steven R. Jefferts; Elizabeth A. Donley; Jon H. Shirley; Thomas E. Parker (IEEE Trans. Instrum. Meas., 2005)

First-Order Sideband Pulling in Atomic Frequency Standards. - Jon H. Shirley; Thomas P. Heavner; Steven R. Jefferts (IEEE Trans. Instrum. Meas., 2009)