@article{833066,
author = {M Bradley and James Porto and S Rainville and J Thompson and D Pritchard},
title = {Penning Trap Measurements of the Masses of 133Cs, 87,85Rb, and 23Na with Uncertainties <0.2 ppb},
year = {1999},
number = {83},
month = {1999-01-01 00:01:00},
publisher = {Physical Review Letters},
language = {en},
}