Hadronic in-Medium Effects with Elementary Probes
  The sensitivity of dilepton production in elementary reactions of photons and pions with nuclei on in-medium changes of hadronic properties is studied. It is shown that this sensitivity is comparable to that encountered in ultrarelativistic heavy-ion collisions. It is also shown how a significant broadening of the mesons affects other photonuclear processes. 
U. Mosel (Institut fuer Theoretische Physik, Universitaet Giessen)