Resonance Production of Three Neutral Supersymmetric Higgs Bosons at LHC
  Multiple production of Higgs particles is essential to study Higgs self-couplings at future high-energy colliders. In this paper we calculated the resonance contributions to the production of three lightest neutral supersymmetric Higgs bosons in gluon fusion at LHC. The cross sections due to trilinear Higgs couplings is sizeable but the measurement of the quartic coupling hhhH(h) seems to be impossible. 
G.Cynolter, E.Lendvai and G.P\'ocsik