Sum Rule Description of Color Transparency
  The assumption that a small point-like configuration does not interact with nucleons leads to a new set of sum rules that are interpreted as models of the baryon-nucleon interaction. These models are rendered semi-realistic by requiring consistency with data for cross section fluctuations in proton-proton diffractive collisions. 
L. Frankfurt, W. R. Greenberg, G. A. Miller, M. Strikman