Quasi-free production of the eta and eta-prime mesons in nucleon-nucleon   collisions
  Some aspects of the quasi-free production of mesons in the near threshold region are discussed. A method of data analysis used by WASA/PROMICE Collaboration to extract the excitation function for eta production on neutron target is briefly presented. Feasibility of similar study with WASA at COSY is discussed. 
J. Stepaniak (Warsaw, Inst. Nucl. Studies), H. Calen (Uppsala U.)