“…At beam energies below about 100 A·MeV, heavy-ion experiments performed mainly at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU) [3,5,11,12,13,14,15,16,17] allowed for systematic investigations of pp small-angle correlations. Furthermore, new methods allowing to deduce the emission source function from two-particle correlations have been proposed.…”