%0 Journal Article %T Measurements of the Cross Section for e+e- -> hadrons at Center-of-Mass Energies from 2 to 5 GeV %A J. Z. Bai %J Physics %D 2001 %I arXiv %R 10.1103/PhysRevLett.88.101802 %X We report values of $R = \sigma(e^+e^-\to {hadrons})/\sigma(e^+e^-\to\mu^+\mu^-)$ for 85 center-of-mass energies between 2 and 5 GeV measured with the upgraded Beijing Spectrometer at the Beijing Electron-Positron Collider. %U http://arxiv.org/abs/hep-ex/0102003v3