Exotic hadronic states at HERA
  Recent results from H1, ZEUS, HERMES and HERA-B on searches for exotic baryons in ep collisions, eD scattering and pA scattering at HERA are reviewed. Evidence for the production of the strange pentaquark Theta^+ and of a narrow anti-charmed baryon decaying to D^{*-}p together with negative results of pentaquark searches at HERA are presented. 
Monica Vazquez (On behalf of the ZEUS, H1, HERMES and HERA-B   collaborations)