Eta Production in Hadronic Interactions
  A short, and definitely not a complete representation of \eta production processes on hadrons is given. First of all, the different ways of obtaining the \pi N \to \eta N and \pi N \to \eta N amplitudes are presented. After that, an overview of results obtained using these amplitudes as input for calculating processes like: NN \to \eta NN, pd \to \eta ^{3}He, \pi d \to \eta NN and \eta d, \eta ^{3}He and \eta ^{4}He as well as \eta-light nuclei bond states, will be given. The experimental and theoretical results will be reviewed. The opened problems and the way how to solve them will be presented. 
Alfred Svarc and Sasa Ceci